" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
x = 5 - y ⇒ substitusi
x - 2y =11
5 - y - 2y = 11
5 - 3y = 11
-3y = 6
y = -2
x = 5-y
x = 5 + 2
x = 7
x-2y=11lx1
2x+2y=10 - +x-2y=11
3x=21
x=7
7+y=5
y=5-7
y=-2
x-2y=11
7- -4=11