19941/2*79+790*6/25

flyfox1912022-10-04 11:39:541条回答

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19941/2*79+790*6/25
=79*(19941/2+10*6/25)
=79*(19941/2+12/5)
=79*(19941*5+24)/10
=(80-1)*99729/10
=8*99729-99729/10
=797832-99729.9
=787859.1
1年前

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19941/2*79+6/25*790+31*7.9
niniaiai-hj1年前1
偏不在涯 共回答了20个问题 | 采纳率80%
19941/2*79+6/25*790+31*7.9
=1994.5*10x7.9+6/25*7.9x100+31*7.9
=(19945+24+31)x7.9
=20000x7.9
=158000