Question

Bantu ya all plisssssssss.
Metode Subtitusi
x+5y=-5 dan
x+y+5=0

Answer 1

X +5y = -5 -------> x = -5 -5y
x +y +5 = 0 -------> x +y = -5

x +y = -5
(-5 -5y) +y = -5
5 -5y +y = -5
-5y +y = -5 -5
-4y = -10
y = -10/-4
y = 2,5

x = -5 -5y
x = -5 -5(2,5)
x = -5 -12,5
x = -17,5

Itu jawabannya.