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2x-13 = 16
2x = 16+13
x = 9,5
6x-2-4x-7 = 16
6x-4x = 16+2+7
2x = 25
x = 25/2
x = 12,5 atau 12 1/2
b) x/5+3=2+3x/5
3-2 = 3x/5 - x/5
1 = 2x/5
2x = 5
x = 5/2
x= 2,5 atau 2 1/5
maaf klo ada yg salah