题目内容
求X的值.
①6×0.8-2X=1.6
②
X+
X=75
③
=
.
①6×0.8-2X=1.6
②
| 1 |
| 2 |
| 1 |
| 3 |
③
| 2.05 |
| X |
| 0.2 |
| 1.6 |
(1)6×0.8-2x=1.6,
4.8-2x+2x=1.6+2x,
4.8-1.6=1.6+2x-1.6,
3.2÷2=2x÷2,
x=1.6;
(2)
x+
x=75,
x÷
=75÷
,
x=90;
(3)
=
,
0.2x=2.05×1.6,
0.2x÷0.2=3.28÷0.2,
x=16.4.
4.8-2x+2x=1.6+2x,
4.8-1.6=1.6+2x-1.6,
3.2÷2=2x÷2,
x=1.6;
(2)
| 1 |
| 2 |
| 1 |
| 3 |
| 5 |
| 6 |
| 5 |
| 6 |
| 5 |
| 6 |
x=90;
(3)
| 2.05 |
| x |
| 0.2 |
| 1.6 |
0.2x=2.05×1.6,
0.2x÷0.2=3.28÷0.2,
x=16.4.
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