题目内容
求未知数x
①2x+30%x=9.2②x:0.75=
.
①2x+30%x=9.2②x:0.75=
| 5 |
| 6 |
①2x+30%x=9.2,
(2+30%)x=9.2,
2.3x=9.2,
2.3x÷2.3=9.2÷2.3,
x=4;
②x:0.75=
,
6x=0.75×5,
6x=3.75,
6x÷6=3.75÷6,
x=0.625.
(2+30%)x=9.2,
2.3x=9.2,
2.3x÷2.3=9.2÷2.3,
x=4;
②x:0.75=
| 5 |
| 6 |
6x=0.75×5,
6x=3.75,
6x÷6=3.75÷6,
x=0.625.
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