解方程.x÷45=1623x-15x=4910(38-14)x=534x+12x=948x÷65=59910x-56x=1.-五年级数学
;
(3)(
-
)x=5
x=5
x×8=5×8
x=40;
(4)
x+
x=
(
+
)x=
x=
x×
=
×
x=
;
(5)8x÷
=
8x÷
×
=
×
8x=
8x÷8=
÷8
x=
;
(6)
x-
x=1
(
-
)x=1
(3)(
3 |
8 |
1 |
4 |
1 |
8 |
1 |
8 |
x=40;
(4)
3 |
4 |
1 |
2 |
9 |
4 |
(
3 |
4 |
1 |
2 |
9 |
4 |
5 |
4 |
9 |
4 |
5 |
4 |
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 |
x=
1 |
12 |
(6)
9 |
10 |
5 |
6 |
(
9 |
10 |
5 |
6 |