问题
解答题
计算: (1)(-3)+6-(-1); (2)(-
(3)(-2)3-3×[(-4)2÷8-(3-5)]-22. |
答案
(1)(-3)+6-(-1)
=-3+6+1
=4;
(2)(-
)×15÷(-37 5
)1 2
=-
×15×(-7 5
) 2 7
=6;
(3)(-2)3-3×[(-4)2÷8-(3-5)]-22
=-8-3×[16÷8-(-2)]-4
=-8-3×[2+2]-4
=-8-3×4-4
=-24.