Gan tolong bantu penyelesaian dengan metode SUBTITUSI :D x-y=6 2x+3y=7

x = 6+y
2x+3y = 7
2(6+y) +3y=7
12+2y +3y = 7
12 + 5y = 7
5y= -5
y= -1
x = 6+y = 6 - 1 =5

2x-2y=12
2x+3y=7
=> -5y = 5
y=-1
x=5