Mengganti variabel x x – 3y = 5 3x + 2y = -7 jawab ya

X -3y = 5
3x+ 2y =-7
—————-
3x-9y = 15
3x+2y= -7
————-
-11y = 22
y= -2

x-3 =5
x-3.-2 =5
x+6 =5
x= 5-6
x= -1