Answer:
Step-by-step explanation:
Both equations have -7y. You can eliminate them by subtracting one equation from the other:
Multiply equation 1 by -1, then add it to equation 2:
-2x + 7y = 74
3x - 7y = -83
———————
x = -9
2x - 7y = -74
2(-9) - 7y = -74
-7y = -56
Y = 8
(x,y) = (-9, 8)
Question number one is <span>B. Multiplication Property of Equality</span>
Answer:
5x+15=0
5x= -15
x= -15/5
x= -3
the solution of the equation is X= -3
