问题
解答题
计算: (1)-6-8-2+3.54-4.72+16.46-5.28; (2)(-3
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答案
(1)-6-8-2+3.54-4.72+16.46-5.28
=(-6-8-2-4.72-5.28)+(3.54+16.46)
=-26+20
=-6;
(2)(-3
)-(-22 3
)-(-13 4
)-1.752 3
=(-3
)+22 3
+13 4
-12 3 3 4
=(-3
+12 3
)+(22 3
-13 4
)3 4
=-2+1
=-1.