(2x-12):(x-12)=8:3
内项积等于外项积
3(2x-12)=8(x-12)
6x-36=8x-96
2x=60
x=30
原式变形8(x-12)=3(2x-12),整理打开括号8x-96=6x-36,移项8x-6x=96-36,2x=60,x=30
相当于求 3(2x-12)=8(x-12)
2x=60
x=30
(2x-12)*3=(x-12)*8
6x-36=8x-96
8x-6x=96-36
2x=60
x=30
(2x-12):(x-12)=8:3
8(x-12)=3(2x-12)
8x-96=6x-36
2x=60
x=30