问题
解答题
化简: (1)3(x-0.5) (2)-3(1+
(3)-
(4)a-4(
|
答案
(1)原式=3x-1.5;
(2)原式=-3-
x;3 4
(3)原式=-
a+b;2 3
(4)原式=a-2a+4b
=-a+4b.
化简: (1)3(x-0.5) (2)-3(1+
(3)-
(4)a-4(
|
(1)原式=3x-1.5;
(2)原式=-3-
x;3 4
(3)原式=-
a+b;2 3
(4)原式=a-2a+4b
=-a+4b.