(-17)×(-5/4)+(-0.125)×100-1 1/4×(-5)简便运算

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(-17)×(-5/4)+(-0.125)×100-1 1/4×(-5)简便运算

(-17)×(-5/4)+(-0.125)×100-1 1/4×(-5)简便运算
(-17)×(-5/4)+(-0.125)×100-1 1/4×(-5)简便运算

(-17)×(-5/4)+(-0.125)×100-1 1/4×(-5)简便运算
(-17)×(-5/4)+(-0.125)×100-1 1/4×(-5)
=17*5/4-12.5+55/4
=(85+55)/4-12.5
=140/4-12.5
=35-12.5
=22.5

-5(-17/4+20/8-11/4)=22.5

=(17)*(5/4)+(11)*(5/4)-(1/8)*100
=(17+11)*(5/4)-(50/4)
=(28-10)*(5/4)
=22.5