计算或化简求值(1)计算7-(-4)+(-5)
问题描述:
计算或化简求值(1)计算7-(-4)+(-5)
(-2)3次方*8-8*(2/1)3次方+8除以8/1
答
(1)7-(-4)+(-5)
=7+4-5
=11-5
=6
(2)(-2)3次方*8-9*(2/1)3次方+8÷8/1
=-8*8-9*8/1+8*8
=64-8/9+64
=127*1/9
=127/9