Question

Solve the system of equations.
3x+y=2

7x−4y=30
(1 point)

Answer 1

From 3x + y = 2, get y = 2 − 3x. Substitute into 7x − 4y = 30:

7x − 4(2 − 3x) = 30
7x − 8 + 12x = 30
19x = 38
x = 2

Then y = 2 − 3(2) = −4.

Solution: (x, y) = (2, −4).