3(2x-1) +4(x+5)=20
6x-3+4x+20=20
10x+17=20
10x=20-17
10x=3
atau x=0,3
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3(2x-1) +4(x+5)=20
6x-3+4x+20=20
10x+17=20
10x=20-17
10x=3
atau x=0,3