问题
解答题
计算: (1)-4
(2)8×(-1)2-(-4)+(-3) (3)(-2)3÷|-32+1|-(-5
(4)5(x-3y)-(-2y+x) |
答案
(1)原式=(-4
+71 3
)-51 3 1 2
=3-51 2
=-2
;1 2
(2)原式=8+4-3
=9;
(3)原式=-8÷8+
×11 2 4 11
=-1+2
=1;
(4)原式=5x-15y+2y-x
=4x-13y.