(4/17+1x25)x17x25=?(5/12+5/18)÷5/8+7/8=?的简算法

vv幽魂04192022-10-04 11:39:541条回答

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(4/17+1/25)x17x25
=4/17x17x25+1/25x25x17
=100+17
=117

(5/12+5/18)÷5/8+7/8
=5/12÷5/8+5/18÷5/8+7/8
=8/12+8/18+7/8
=3/4+4/9+7/8
=54/72+32/72+63/72
=(54+32+63)/72
=149/72
1年前

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