4*4*4-{[(-3)*(-3)*(-3)*(-3)]-[(-1)/2.5+2.25*(-4)]/(24.53-27.53)}
问题描述:
4*4*4-{[(-3)*(-3)*(-3)*(-3)]-[(-1)/2.5+2.25*(-4)]/(24.53-27.53)}
答
原式=4×4×4-{[(-3)×(-3)×(-3)×(-3)]-[(-1)÷2.5+2.25×(-4)]÷(24.53-27.53)}
=64-{(+81)-[(-1)×0.4+(-9)]÷(-3)}
=64-[+81-3.6÷(-3)]
=64-[+81-(-1.2)]
=64-(+82.2)
=64-82.2
=-18.2