Question

Solve the system by using elimination or elimination with multiplication. Write the solution as an ordered pair (a, b).
a - b = -5 and a + 2b = 1

Answer 1

b=2 and a=-3

Answer 2

a - b = -5 (1)

a + 2b = 1 (2)

you need 2 x (1) + (2)

2a - 2b = -10
+ a + 2b = 1
---------------
3a = -9

a = -3

substitute into either equation to find b

b = 2

hope it helps