问题
解答题
计算题 (1)-24÷(-
(2)-9+5×(-6)-(-4)2÷(-8) (3)(-3)2-(1
(4)-8x+(6x-5y)-2(3+y-x) |
答案
(1)原式=-16×(-7)×(-7)=-224;
(2)原式=-9-30-16÷(-8)=-9-30+2=-37;
(3)原式=9-
×27 8
-6×2 9
=9-3 2
-9=-3 4
;3 4
(4)原式=-8x+6x-5y-6-2y+2x=-7y-6.