是简便运算哦!(2-0.125)*83.6/[0.25*(17.3 +30.7)]

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是简便运算哦!(2-0.125)*83.6/[0.25*(17.3 +30.7)]
是简便运算哦!
(2-0.125)*8
3.6/[0.25*(17.3 +30.7)]

是简便运算哦!(2-0.125)*83.6/[0.25*(17.3 +30.7)]
(2-0.125)*8
=2*8-0.125*8
=16-1
=15
3.6/[0.25*(17.3 +30.7)]
=3.6/[0.25*48]
=3.6/[0.25*(40+8)]
=3.6/[0.25*40+0.25*8]
=3.6/[10+2]
=3.6/12
=0.3