Question

7x+y=-3 2x=3y=-14 what is x what is y

Answer 1

(x, y) = (-1, 4)

Explanation:

We assume your two equations are ...

• 7x + y = -3
• 2x - 3y = -14

You can eliminate the y-variable by multiplying the first equation by 3 and adding the second.

3(7x +y) +(2x -3y) = 3(-3) +(-14)

23x = -23 . . . . . . . simplify

x = -1 . . . . . . . . . . . divide by 23

7(-1) + y = -3 . . . . . substitute for x in the first equation

y = 4 . . . . . . . . . . . add 7