题目内容
解方程或解比例:
| (1)42-6Χ=15.6 | (2)Χ:0.2=
|
(1)42-6Χ=15.6,
42-6Χ+6x=15.6+6x,
42-15.6=15.6+6x-15.6,
26.4=6x,
26.4÷6=6x÷6,
x=4.4;
(2)Χ:0.2=
:0.8,
0.8x=0.2×
,
0.8x÷0.8=
÷0.8,
x=
.
42-6Χ+6x=15.6+6x,
42-15.6=15.6+6x-15.6,
26.4=6x,
26.4÷6=6x÷6,
x=4.4;
(2)Χ:0.2=
| 2 |
| 3 |
0.8x=0.2×
| 2 |
| 3 |
0.8x÷0.8=
| 2 |
| 15 |
x=
| 1 |
| 6 |
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