题目内容
7.2+4x=50
x-
x=
=
:x=
:
.
x-
| 1 |
| 5 |
| 3 |
| 10 |
| 64 |
| x |
| 2.4 |
| 0.9 |
| 1 |
| 6 |
| 1 |
| 10 |
| 1 |
| 4 |
(1)7.2+4x=50,
7.2+4x-7.2=50-7.2,
4x=42.8,
4x÷4=42.8÷4,
x=10.7;
(2)x-
x=
,
x=
,
x÷
=
÷
,
x=
;
(3)
=
,
2.4x=64×0.9,
2.4x÷2.4=57.6÷2.4,
x=24;
(4)
:x=
:
,
x=
×
,
x÷
=
÷
,
x=
.
7.2+4x-7.2=50-7.2,
4x=42.8,
4x÷4=42.8÷4,
x=10.7;
(2)x-
| 1 |
| 5 |
| 3 |
| 10 |
| 4 |
| 5 |
| 3 |
| 10 |
| 4 |
| 5 |
| 4 |
| 5 |
| 3 |
| 10 |
| 4 |
| 5 |
x=
| 3 |
| 8 |
(3)
| 64 |
| x |
| 2.4 |
| 0.9 |
2.4x=64×0.9,
2.4x÷2.4=57.6÷2.4,
x=24;
(4)
| 1 |
| 6 |
| 1 |
| 10 |
| 1 |
| 4 |
| 1 |
| 10 |
| 1 |
| 6 |
| 1 |
| 4 |
| 1 |
| 10 |
| 1 |
| 10 |
| 1 |
| 24 |
| 1 |
| 10 |
x=
| 5 |
| 12 |
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