3(2x-1)+12=39
问题描述:
3(2x-1)+12=39
答
3(2x-1)+12=39
6x-3=39-12
6x=27+3
6x=30
x=5
3(2x-1)+12=39
3(2x-1)+12=39
6x-3=39-12
6x=27+3
6x=30
x=5