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# Pre Algebra Equations

Pre algebra equation problems contains the terms like numbers, integers, fractions, percentages, roots, exponents, ratios, measurements, graphing etc. Pre Algebra equations is the simple equation which can be solved easily without any complex calculations.

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## Online Pre Algebra Equations

 Pre algebra equations are the equations that are solved easily by just considering the key words like variable operations and value. The following are the important things that need to be noted down in online pre algebra equations

Some Terms used in Pre Algebra:

Variables:

The variable is the important thing that needs to be considered in online pre algebra equations.

Operations:

Operations such as (+, -, x, /) plays an important role in online pre algebra equations.

Factor:

Factor takes place when two numbers are multiplied.

Expression:

Expression is mathematical sentence which contain more than one operation.

Values:

We should enter the correct and valid values to get a perfect answer in online pre algebra equations.

## Pre Algebra Solving Equations

Solving pre algebra equations is very easy. It only requires simple equation solving. Solving pre algebra equations follows some rules like writing down the equation in its simplest terms. This will reduce the complexity of the problem. The basic principle behind solving pre algebra equations is to get the variable (x) on one side by itself and a number on the other side of the equals sign.

### Solved Example

Question: Solve 2x - 14 = 4.
Solution:

The equation 2x - 14 = 4 is already expressed in its simplest terms and is ready to be taken apart and solved.

Step 1:
Add 14 to the left side in order to isolate x. We must add 14 to the right side to balance the equation.

2x - 14 + 14 = 4 + 14

2x = 18

Step 2:
Divide both sides by two.

$\frac{2x}{2}$ = $\frac{18}{2}$

x = 9

## Pre Algebra Two Step Equations

Pre algebra two step equations are the equations that can be solved easily without involving complex steps. Two step equations are the equations through which the value of a particular variable can be solved with in one or two steps. Rules to be followed for Pre algebra math equation is that changing the order of the addends (numbers you're adding) doesn't change their sum (what they equal when added together).

### Solved Example

Question: Solve 2x + 12 = 0
Solution:

Given equation is 2x + 12 = 0

Put all the variables aside and value on other side.

We get, 2x = -12

Now, to get x value, divide both sides with 2

$\frac{2x}{2}$ = $\frac{-12}{2}$

x = - 6

## Pre Algebra Multi Step Equations

The pre algebra math equation is an equation which contains both the numbers and variable together to get a simple equation form. In pre algebra math equation, we should use the operations like (+, -, x, /), a single variable and values. Multi step equations are the equations through which the value of a particular variable can be solved with in two or more steps.

### Solved Example

Question: Solve a2 + 4a + 3 = 0
Solution:

Given equation is quadratic in nature.

a2 + 4a + 3 = 0

Step 1:

Solve for x

By factoring quadratic equation, we have

=> a2 + 3a + a + 3 = 0

=> a(a + 3) + (a + 3) = 0

=> (a + 1)(a + 3) = 0

Step 2:
Either (a + 1) = 0 or (a + 3) = 0

=> a = -1 or a = -3

=> The values of 'a' are -1 and -3.

## Pre Algebra Equations Problems

Given below are some of the problems on Pre Algebra Equations.

### Solved Examples

Question 1: Solve x + 5 = 23
Solution:

x + 5 = 23

To get x value, subtract both sides with 5.

x + 5 - 5 = 23 - 5

x = 18

Question 2: Solve x + 25 = 26
Solution:

x + 25 = 26

To get x value, subtract both sides with 25.

x + 25 - 25 = 26 - 25

x = 1

Question 3: Solve 3x + 5 = 50
Solution:

3x + 5 = 50

Subtract 5 from both sides

=> 3x + 5 - 5 = 50 - 5

=> 3x = 45

To get x value, divide both sides with 3

$\frac{3x}{3}$ = $\frac{45}{3}$

x = 15

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