脱式计算.(3-112.55%+8/7)*21/13*56/169
问题描述:
脱式计算.(3-112.55%+8/7)*21/13*56/169
答
251 8 21*56
= (3 - ——— + —)* ————
2000 7 13*169
42243 1176
= ———— * ———
14000 2197
= 2.8456