" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
x + y =2
dikurangkan
x + 2y = -3
x+y=2. dikali2>>2x+2y=4
dikurangin
y=11
maka x+y=2
x+11=2
x=-9