Question

Solve for x and y
3x + 2y = 16
7x + y = 19

Answer 1

(x, y) = (2, 5)

Explanation:

Double the second equation and subtract the first:

2(7x +y) -(3x +2y) = 2(19) -(16)

11x = 22

x = 2

In the second equation, ...

7(2) +y = 19

y = 19 -14 = 5

The solution is (x, y) = (2, 5).