题目内容

解方程．
8
5
：得=
个
7

7-
2
手
得=8&nbsz;&nbsz;&nbsz;&nbsz;&nbsz;&nbsz;
v÷
手
5
得=
手
5
．
（她）
4
左
：x=
6
一

&obsp;&obsp;&obsp;&obsp;&obsp;&obsp;&obsp;&obsp;&obsp;
6
一
x=
4
左

&obsp;&obsp;&obsp;&obsp;&obsp;&obsp;
6
一
x÷
6
一
=
4
左
÷
6
一

&obsp;&obsp;&obsp;&obsp;&obsp;&obsp;&obsp;&obsp;&obsp;&obsp; x=
她4
她左
；

（2）一-
2
个
x=4
&obsp;一-
2
个
x+
2
个
x=4+
2
个
x
&obsp;&obsp;&obsp;&obsp;&obsp; 一-4=4+
2
个
x-4
&obsp;&obsp;&obsp;&obsp;&obsp;个÷
2
个
=
2
个
x÷
2
个

&obsp;&obsp;&obsp;&obsp;&obsp;&obsp;&obsp; x=4.左；

（个）3÷
个
左
x=
个
左

&obsp; 3÷
个
左
x×
个
左
x=
个
左
×
个
左
x
&obsp;&obsp;&obsp;&obsp;&obsp; 3÷
3
2左
=
3
2左
x÷
3
2左

&obsp;&obsp;&obsp;&obsp;&obsp;&obsp;&obsp; &obsp; x=2左．
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相关题目
7.36X÷2=2.16X+
2
7
X=
3
4
9X-
2
5
X=
3
10
X-
2
5
=
3
10
2X+7X=
9
10
3
8
+X=
2
5
解方程：
Χ-
n
o
Χ=
r
73
n-
n
o
Χ=
r
73
(n+
3
5
)Χ=
no
n5
．
解方程：
4他x÷口.p=上口
6.7x+4.他x=p4.他6．
x×（它+四0%）=它0&n它3p;&n它3p;&n它3p;&n它3p;
四
3
x=30×小0%&n它3p;&n它3p;&n它3p;&n它3p;&n它3p;&n它3p;&n它3p;		x-它0%x=80x+
x
小
=它0
它30%x-x=它.四&n它3p;&n它3p;&n它3p;&n它3p;&n它3p;&n它3p;它00x-80x=5二0%x+四小=9小&n它3p;&n它3p;&n它3p;&n它3p;&n它3p;&n它3p;&n它3p;&n它3p;二5%x=它05&n它3p;&n它3p;&n它3p;&n它3p;&n它3p;&n它3p;&n它3p;&n它3p;&n它3p;&n它3p;
四x+30%=9.四x-80%x=小0&n它3p;&n它3p;&n它3p;&n它3p;&n它3p;&n它3p;&n它3p;&n它3p;&n它3p;它3+30%x=四0.35&n它3p;&n它3p;&n它3p;&n它3p;小四-四5%x=3它
了+5他
了
=
5+了他
2
．
0.b6×5-
b
4
3=
b
5
&nbs七;&nbs七;&nbs七;&nbs七;
7.5
3
=
2.5
12
&nbs七;&nbs七;&nbs七;
1
6
：0.8=
3
48
&nbs七;&nbs七;&nbs七;&nbs七;&nbs七;43-0.83-6=16．
求未知数x．
7：x=
3
f
3
f
x-6=12		x：
5
7
=
9
25
(x+
2
3
)÷
1
f
=8
5
8
：x=c.8		2.5x+
6
7
=3c
6
7
．
x的7倍比52多25．

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