# How do you solve #2x-y=6# and #x+y=-3#?

##### 2 Answers

#### Answer:

#### Explanation:

There are 3 ways to solve this. Here is one way:

Elimination:

Line them up:

Add all that goes together:

Put it back into an equation:

Plug what x equals (1) into one of the previous equations:

#### Answer:

#### Explanation:

These are called simultaneous equations. Multiply both equations so they both have the same leading coefficient. Use the coefficient of

Equals

Then subtract the two equations

Result:

Simplify:

so

Replace the