# How do you solve the system of linear equations # 2x + y = 9# and # x - y = 3#?

##### 1 Answer

Feb 17, 2016

#### Answer:

#### Explanation:

Given:

[1]

[2]

Add equations [1] and [2] to get

[3]

Divide equation [3] by

[4]

Substitute

[5]

Think about it for a minute, then write

[6]