(1)计算:①3+(-3.5)-5-(-12)②(38+123-234)×(-24)+(-1)200(2)解方程:x-22=1-2x+15.-数学

题目简介

(1)计算:①3+(-3.5)-5-(-12)②(38+123-234)×(-24)+(-1)200(2)解方程:x-22=1-2x+15.-数学

题目详情

(1)计算:
3+(-3.5)-5-(-
1
2
)

(
3
8
+1
2
3
-2
3
4
)×(-24)+(-1)200

(2)解方程:
x-2
2
=1-
2x+1
5
题型:解答题难度:中档来源:不详

答案

(1)①原式=3-3.5-5+0.5
=-5;

②原式=-9-40+66+1
=18;

(2)去分母得:5x-10=10-4x-2,
移项合并得:9x=18,
解得:x=2.

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