Alternatif jawaban:
7x + 2y = 11
2x - 3y = 21
---------------- kurangi
5x + 5y = -10 lalu bagi 5
x + y = -2
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Alternatif jawaban:
7x + 2y = 11
2x - 3y = 21
---------------- kurangi
5x + 5y = -10 lalu bagi 5
x + y = -2
2x-3y=21 4x-6y=42
25x=75
x=3
y=-5
x+y=-2