2/7 (3X-7)=2-1.5x
问题描述:
2/7 (3X-7)=2-1.5x
答
2/7 (3X-7)=2-1.5x 两边同乘以7 2(3x-7)=7(2-1.5x) 6x-14=14-10.5x
16.5x=28 x=59/31