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2x+3y-8=0 x2
3x+2y-7=0 x3
____________
4x+6y-16=0
9x+6y-21=0
samakan yang ngk ada x dan y
4x+6y=16
9x+6y=21
_________ -
-5x=-5
x= 1
subtitusikan
2x+3y-8=0
2.1+3y-8=0
3y=8-2
y=6/3
y=2
2. 4x = 3y dan 2x - 3y = -6
4x = 3y
2x - 3y = -6
=>
4x-3y=0 x1
2x-3y=-6 x2
4x-3y=0
4x-6y=-12
___________ _
3y=-12
y= -4
subtitusikan
2x-3.-3=-12
2x-6=-12
2x=-12+6
x=6/2
x=3
4. 3x - 2y - 12 = 0 dan 4x - 3y - 7 = 0
3x - 2y - 12 = 0 x4
4x - 3y - 7 = 0 x3
=>
12x-8y-48=0
12x-9y-21=0
Pindah ruas
12x-8y=48
12x-9y=21
________ -
y=27
subtitusikan
3x - 2y - 12 = 0
3x-2.27-12=0
3x-54-12=0
3x=66
x=56/3
x=22
maaf jika ada kurang tepat nya
no 3 apa ngk salah angkanya