解方程: x×(1+ 1 4 )=60 3 4 ÷x= 3 8 15 16

解方程: x×(1+ 1 4 )=60 3 4 ÷x= 3 8 15 16 x- 3 4 = 1 4 x 3 : 1 2 = 4 9 .
2024-12-31 21:52:12
推荐回答(1个)
回答1:

(1)x×(1+
1
4
)=60,
5
4
x
=60,
5
4
x
×
4
5
=60×
4
5

x=48;

(2)
3
4
÷x=
3
8

3
4
÷x×x=
3
8
x
3
4
×
8
3
=
3
8
8
3

x=2;

(3)
15
16
x-
3
4
=
1
4

15
16
x-
3
4
+
3
4
=
1
4
+
3
4

15
16
16
15
=1×
16
15

x=
16
15


(4)
x
3
1
2
=
4
9

x
3
=
1
2
×
4
9

x
3
×3=
2
9
×3

x=
2
3