Question

Solve this system of equations using the addition method.

x - y = 6
-3y = x + 22

Answer 1

Okay, you need to rearrange the second equation so it has the x on the left side of the equal sign. Then stack the equations as before, and add down the columns. You'll get an equation that only has y and numbers in it. Solve that for y. Use the value of y in either of the original equations to find the value of x.

Answer 2

Basically as whpalmer4 said like so:

Then just add down

Answer 3

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