32-22X=10 (200-X)÷5=30 (18X-2)=270 100-20X=20+30X.
问题描述:
32-22X=10 | (200-X)÷5=30 | (18X-2)=270 | 100-20X=20+30X. |
答
(1)32-22X=10,32-22X+22X=10+22X, 22X+10-10=32-10, 22X=22, 22X÷22=22÷22, X=1;(2)(200-X)...