Question

3x-2y-12=0|y
4x-3y-7=0 |x
jawab

Answer 1

3x-2y=12→x3
4x-3y=7→x2=
9x-6y= 36
8x-6y= 14
---------------- -
x = 22

3x-2y=12
3.22-2y=12
66-2y=12
y = (22-66)/2
y = -22

Answer 2

3x-2y-12=0
4x-3y-7=0

-9x+6y+36=0
-8x+6y+14=0
________________-
-x+22=0
x=22

3x-2y-12=0
3(22) -2y-12=0
66-2y-12=0
-2y=-66+12
-2y=-54
y=-54:-2
y=27