# How do you solve the system #5x - y = - 14 + 2x + y# and #7x + 9y + 4 = 3x + 8y#?

##### 1 Answer

#### Answer:

#### Explanation:

First simplify both equations:

Subtract

Subtract

Subtract

So now we have two simplified equations:

Using the second equation, determine a value for

Subtract

In the first equation, substitute

Open the brackets and simplify. The product of two negatives results in a positive.

Subtract

Divide both sides by

In the second equation, substitute

Open the brackets and simplify. The product of a positive and a negative results in a negative.

Add