Question

I need help on the following:

Solve the following system of equations
7x+3y= -16
3x+5y= 8

x= ?
y= ?

Answer 1

rewrite the equations as
3(7x+3y=16) and
7(3x+5y=8)
then subtract to solve for y. Then substitute y into any equation to find x.

Answer 2

The equation on the top should be -16

21x +9y = -48
21x +35y=56
Bottom minus top
0x +26y = 104
y = 104/26 = 4
21x +9(4) = -48
21x +36 = -48
21x = -84
x = -84/21 = -4

x=-4 y= 4

Answer 3

Thank you so much :D