Question

(04.02 MC)
Solve the system of equations.
5x + y = 9
3x + 2y = 4

Answer 1

Answer I git was (2-1)

Answer 2

(2,-1)

Explanation:

Multiply first equation by 2:

10x + 2y = 18

Subtract the second equation from this so that the 2y terms cancel:

10x - 3x = 18 - 4

7x = 14

x = 2

Plug into first equation to find y:

5(2) + y = 9

10 + y = 9

y = -1

The answer is (2,-1)