" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
3x + 5y = -19. x2
menjadi
6x - 7y = 47
6x + 10y = -38
____________ -
-17y = 85
y = 85/-17 = -5
mencari x
6x - 7y = 47
6x -(7*-5) = 47
6x-(-35) = 47
6x+35 =47
6x=47-35
6x=12
x=12/6 =2
jadi x +y = 2 + (-5) = -3