7.2x+x=8.68怎么算
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解决时间 2021-01-26 18:47
- 提问者网友:留有余香
- 2021-01-26 00:05
7.2x+x=8.68怎么算
最佳答案
- 五星知识达人网友:酒醒三更
- 2021-01-26 01:39
解:解方程( x = 217/205 )
7.2x + x = 8.68
(7.2 + 1)x = (8×100 + 68)/100
[(7×10 + 2)/10 + 5/5]x = 868/100
(72/10 + 5/5)x = 217/25
(36/5 + 5/5)x = 217/25
(41/5)x = 217/25
x = 217/25 ÷ 41/5
x = 217/25 × 5/41
x = 217/205
答:此方程的解为x = 217/205
7.2x + x = 8.68
(7.2 + 1)x = (8×100 + 68)/100
[(7×10 + 2)/10 + 5/5]x = 868/100
(72/10 + 5/5)x = 217/25
(36/5 + 5/5)x = 217/25
(41/5)x = 217/25
x = 217/25 ÷ 41/5
x = 217/25 × 5/41
x = 217/205
答:此方程的解为x = 217/205
全部回答
- 1楼网友:雾月
- 2021-01-26 03:14
8.2x=8.68
x=8.68/8.2=217/205
x=8.68/8.2=217/205
- 2楼网友:天凉才是好个秋
- 2021-01-26 02:25
7.2x+x=8.68
解:8.2x=8.68
x=8.68÷8.2
x≌1.06
解:8.2x=8.68
x=8.68÷8.2
x≌1.06
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