问题
解答题
计算:
(1)-8-(-1)-(+5);
(2)15-[1-(-20-4)].
答案
(1)-8-(-1)-(+5)
=-8+1-5
=-13+1
=-12;
(2)15-[1-(-20-4)]
=15-[1-(-24)]
=15-(1+24)
=15-25
=-10.
计算:
(1)-8-(-1)-(+5);
(2)15-[1-(-20-4)].
(1)-8-(-1)-(+5)
=-8+1-5
=-13+1
=-12;
(2)15-[1-(-20-4)]
=15-[1-(-24)]
=15-(1+24)
=15-25
=-10.