问题
解答题
计算 (1)12-7+18-15 (2)(1-
|
答案
(1)12-7+18-15
=30-22
=8;
(2)(1-
)÷(-12 3
)+(-2)2×(-3)1 6
=
÷(-11 3
)+4×(-3)1 6
=-
-122 7
=-12
.2 7
计算 (1)12-7+18-15 (2)(1-
|
(1)12-7+18-15
=30-22
=8;
(2)(1-
)÷(-12 3
)+(-2)2×(-3)1 6
=
÷(-11 3
)+4×(-3)1 6
=-
-122 7
=-12
.2 7