Question

解方程. x÷45=1623x-15x=4910(38-14)x=534x+12...

解方程. x÷45=1623x-15x=4910(38-14)x=534x+12x=948x÷65=59910x-56x=1.

Answer 1

(1)x÷
4
5
=16
x÷
4
5
×
4
5
=16×
4
5
x=12.8;
(2)
2
3
x-
1
5
x=
49
10
(
2
3
-
1
5
)x=
49
10
1
2
x=
49
10
1
2
x×2=
49
10
×2
x=
49
5
;
(3)(
3
8
-
1
4
)x=5
1
8
x=5
1
8
x×8=5×8
x=40;
(4)
3
4
x+
1
2
x=
9
4
(
3
4
+
1
2
)x=
9
4
5
4
x=
9
4
5
4
x×
4
5
=
9
4
×
4
5
x=
9
5
;
(5)8x÷
6
5
=
5
9
8x÷
6
5
×
6
5
=
5
9
×
6
5
8x=
2
3
8x÷8=
2
3
÷8
x=
1
12
;
(6)
9
10
x-
5
6
x=1
(
9
10
-
5
6
)x=1
1
15
x=1
1
15
x×15=1×15
x=15.