问题 解答题
计算:
(1)(-3)+6-(-1);
(2)(-
7
5
)×15÷(-3
1
2
)

(3)(-2)3-3×[(-4)2÷8-(3-5)]-22
答案

(1)(-3)+6-(-1)

=-3+6+1

=4;

(2)(-

7
5
)×15÷(-3
1
2
)

=-

7
5
×15×(-
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.

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