问题标题:
七年级数学质量检测第七章第一节答案急求
问题描述:
七年级数学质量检测第七章第一节答案急求
谷侃锋回答:
7(2x-1)-3(4x-1)=4(3x+2)-1;
(5y+1)+(1-y)=(9y+1)+(1-3y);
[()-4]=x+2;
20%+(1-20%)(320-x)=320×40%
2(x-2)+2=x+1
2(x-2)-3(4x-1)=9(1-x)
11x+64-2x=100-9x
15-(8-5x)=7x+(4-3x)
3(x-7)-2[9-4(2-x)]=22
3/2[2/3(1/4x-1)-2]-x=2
12x-10.3x=15
20.52x-(1-0.52)x=80
3x/2+3x/2=7
43x+7=32-2x
53x+5(138-x)=540
63x-7(x-1)=3-2(x+3)
718x+3x-3=18-2(2x-1)
83(20-y)=6y-4(y-11)
9-(x/4-1)=5
103[4(5y-1)-8]=6
10/3(x/5+3/7)=9x/2
5/3(x+0.5)+2=3x-6
5x+2(2x/3+2)=2/3(x-6)+2
(2x-7)/2-(6x-5)/3=2x+3
(3x+2)/5-(x-6)=x/3
6x-(x/3+2)=2(x/5+5/2)-3
3(x/11-2)-5=2+3x/3
10/3(2x-6)=3/5
x/2-(x/3-2)=3
2/3(x+3)-3=5x/3
5/3(2x-5/3)=2x/5-8/9
25(x/3-x/2+2/5)-2=3/5(x-2/7)+4/9
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