1.-2/3+(-5/6)-(-1/9)-1/62.{1-(-1/4)}×{(-2)的三次方+(-3)的二次方}
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题目内容:
1.-2/3+(-5/6)-(-1/9)-1/6
2.{1-(-1/4)}×{(-2)的三次方+(-3)的二次方}
优质解答
-2/3+(-5/6)-(-1/9)-1/6
= -2/3-5/6+1/9-1/6
= -12/18-15/18+2/18-3/18
= -28/18
= -14/9
{1-(-1/4)}×{(-2)的三次方+(-3)的二次方}
=(1+1/4)*(-8+9)
=5/4*1
=5/4
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