Sample :

X + 5 = 7.

What is the value of x.

In this equation the unknown variable is x. So we need to solve for x.

X+5 =7

X=7-5

X=2

We must know the rule of inverse when will deal with equation

Note the following rules of inverse

The inverse of + = -

The inverse of * = / etc

Solve the following

1. 10x + 5 = 8x + 7

2. X- 4 = 10

3. 2x + 4 = 10

4. 5x + 6 = 3x - 8

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