1.72×2.09-1.8×73.6简算
问题描述:
1.72×2.09-1.8×73.6简算
答
(1.8-0.08)x2.09-1.8x73.6然后呢1.8x2.09-0.08x2.09-1.8x73.6
1.8x(2.09-73.6)-0.08x2.09