" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
5x + 2y = -11 |×2| 10x + 4y = -22
-29y = -58
y = 2
2x - 5y = -16
2x - 5(2) = -16
2x - 10 = -16
2x = -16 + 10
2x = -6
x = -3
7x - 8y = 7(-3) - 8(2)
= -21 - 16
= -37
Jadi jawabannya adalah yang A. -37.