" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
(2x-2y=10):2
(x+y = -3 ) - (x-y=5) = (2y = -8)
y= -4
x+y= -3
x+(-4)=-3
x= 1
substitusi:
2(- 3 - y) - 2y = 10
- 6 - 2y - 2y = 10
- 4y = 16
y = - 4
x = - 3 - (- 4) = 1
HP: (1, - 4)