6(x+5)+7=30-4(x-2) 6(x+1/2)+2=29-3(x-1)

问题描述:

6(x+5)+7=30-4(x-2) 6(x+1/2)+2=29-3(x-1)

6(x+5)+7=30-4(x-2)
6x+30+7=30-4x+8
6x+4x=30+8-30-7
10x=1
x=0.1
6(x+1/2)+2=29-3(x-1)
6x+3+2=29-3x+3
6x+3x=29+3-3-2
9x=27
x=3