题目内容
解方程:
X-0.8X-6=1
=
.
X-0.8X-6=1
| x | ||
0.5÷
|
| 0.15 |
| 60% |
(1)X-0.8X-6=1,
0.2x-6=1,
0.2x-6+6=1+6,
0.2x=7,
x=7÷0.2,
x=35;
(2)
=
,
60%x=0.15×(0.5÷
),
60%x=0.15×2,
60%x=0.3,
60%x÷60%=0.3÷60%,
x=0.5.
0.2x-6=1,
0.2x-6+6=1+6,
0.2x=7,
x=7÷0.2,
x=35;
(2)
| x | ||
0.5÷
|
| 0.15 |
| 60% |
60%x=0.15×(0.5÷
| 1 |
| 4 |
60%x=0.15×2,
60%x=0.3,
60%x÷60%=0.3÷60%,
x=0.5.
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