www.5129.net > 750➗50=75➗5=( )➗20

750➗50=75➗5=( )➗20

方程的解是x=10800 (X➗2十600)➗750=(X➗2一600)➗600 600×(x÷2+600)=750×(x÷2-600) 4×(x÷2+600)=5×(x÷2-600) 2x+2400=2.5x-3000 2.5x-2x=2400+3000 0.5x=5400 x=10800。

17➗34% =17x100➗34 =17x2x50➗34 =34➗34x50 =50

列式为: 5400➗72 =5400➗(9x8) =5400➗9➗8 =600➗8 =75

145/190 =(145➗5)/(190➗5) =29/38

:52➗5十53➗5十54➗5十55➗5十56➗5 =(52+53+54+55+56)÷5 =54*5÷5 =54

960➗40 =(1000-40)➗40 =1000➗40-40➗40 =25-1 =24

1736➗28十1064➗28简算 1736➗28十1064➗28 =(1736+1064)÷28 =2800÷28 =100

-12÷(-2) =[(-12)×(-1)]÷[(-2)×(-1)] =12÷2 =6

15x23x4=15x4x23=60x23=1380540➗36=540➗(9×4)=540➗9➗4=60➗4=15

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