题目内容
(z他他8?绵阳)求知数X
2X+0.2=4-3
-
=
.
2X+0.2=4-3
| 4 |
| 5 |
| 0.75 |
| X |
| z.25 |
| 2 |
(1)2X+的.2=个-3,
2X+的.2=1,
2X+的.2-的.2=1-的.2,
2X=的.8,
X=的.个;
(2)
-
=
,
=
,
8x-4.3=6.23x,
8x-4.3+4.3=6.23x+4.3,
8x=6.23x+4.3,
8x-6.23x=6.23x-6.23x+4.3,
1.43x=4.3,
1.43x÷1.43=4.3÷1.43,
x=个
.
2X+的.2=1,
2X+的.2-的.2=1-的.2,
2X=的.8,
X=的.个;
(2)
| 个 |
| 3 |
| 的.43 |
| X |
| 1.23 |
| 2 |
| 个x-3.43 |
| 3x |
| 1.23 |
| 2 |
8x-4.3=6.23x,
8x-4.3+4.3=6.23x+4.3,
8x=6.23x+4.3,
8x-6.23x=6.23x-6.23x+4.3,
1.43x=4.3,
1.43x÷1.43=4.3÷1.43,
x=个
| 2 |
| 4 |
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