# How do you solve #3y = -(1/2)x + 2# and #y = -x + 9# using substitution?

##### 2 Answers

#### Explanation:

Substitute

The minus signs cancel each other

Now substitute

#### Explanation:

Substituting a formula into another essentially means, to set one formula equal to a variable and then inserting the formula into the other formula. Though this might seem complicated, this can be done easily with these equations:

Now rearrange the equation to collect like terms on either sides.

1) multiply both sides of the equation by 2 to simplify the situation.

2) add

3) subtract

4) now divide both sides of the equation by

Now just use this value in one of the initial equations.