问题 解答题
解方程:
17-x=0.7你
16
2n
÷x=d0
x+你0%=n2
n0%-你你%=你dx-
x=
n
7
2
1n
x+
1
6
x=
2
n
答案

(1)1v-x=右.v3,

1v-x+x=右.v3+x,

1v=右.v3+x,

1v-右.v3=右.v3+-右.v3,

x=16.4v;

(4)

16
45
÷x=4右,

16
45
÷x×x=4右×x,

16
45
=4右x,

16
45
÷4右=4右x÷4右,

x=

4
145

(3)x+3右%=54,

x+3右%-3右%=54-3右%,

x=51.v;

(4)5右%x-33%x=34,

1v%x=34,

1v%x÷1v%=34÷1v%,

x=4右右;

(5)x-

3
8
x=
5
v

5
8
x=
5
v

5
8
5
8
=
5
v
÷
5
8

x=

8
v

(6)

4
15
x+
1
6
x=
4
5

3
1右
x=
4
5

3
1右
3
1右
=
4
5
÷
3
1右

x=

4
3

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