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3x = 18 - 6
3x = 12
x = 4
2) 7x - 4 = 4x + 20
7x - 4x = 20 + 4
3x = 24
x = 8
3) 3(2x-2) = 30
6x - 6 = 30
6x = 30 + 6
6x = 36
x = 6
semoga membantu yaaaaaa :)
3x=18-6
3x=12
x=12/3
x=4
2. 7x-4=4x+20
7x-4x=20+4
3x=24
x=24/3
x=8
3. 3(2x-2)=30
6x-18=30
6x=30+18
6x=48
x=48/6
x=8