85.87-(5.87+2.9)(简便运算)

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85.87-(5.87+2.9)(简便运算)
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85.87-(5.87+2.9)(简便运算)
85.87-(5.87+2.9)(简便运算)

85.87-(5.87+2.9)(简便运算)

77.1

85.87-(5.87+2.9)=85.87-5.87-2.9=80-2.9=77.1

85.87-(5.87+2.9)

最简便运算应该是85.87-5.87-3+0.1=77.1再问你个嗯。。。说吧2.5X(4.8X3.6-6.2X3.6)-1.82.5×3.6×(4.8-6.2)-1.8然后2.5×4×0.9×(4.8-6.2)-1.8=1×0.9×(4.8-6.2-2)=-0.9×3.4=-3.06算错了。嘿嘿。不是1是10

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85.87-5.87-3+0.1