问题 解答题
求未知数x
(1)
4
5
X+1
1
2
=2
1
6

(2)x:5.6=5:3.5.
答案

(1)

4
5
X+1
1
2
=2
1
6

4
5
X+1
1
2
-1
1
2
=2
1
6
-1
1
2

4
5
X=
2
3

4
5
X÷
4
5
=
2
3
÷
4
5

X=

5
6

(2)x:5.6=5:3.5,

3.5x=5.6×5,

3.5x=28,

3.5x÷3.5=28÷3.5,

x=8.

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