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PPK555
@PPK555
August 2021
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Решите пожалуйста уравнение ,
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antoniolio
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[6 3/7 – (0,75x-2)/0,35)*2,8+1,75]:0,05=235
[6 3/7 – (0,75x:0,35-2:0,35)*2,8+1,75]:0,05=235
1) 75/100х:35/100=75x/35=15/7x
2) 2:35/100=200/35=40/7
3) 6 3/7-15/7x+40/7=85/7-15/7x
4) (85/7-15/7x)*2,8=85/7*28/10-15/7x*28/10=34-6х
5) 34-6х +1,75=35,75-6х
6) (35,75-6х):0,05=35,75:0,05-6х:0,05=715-120х
7) 715-120х=235
-120х=235-715
-120х=-480
х=4
Ответ: х=4
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Answers & Comments
Verified answer
[6 3/7 – (0,75x-2)/0,35)*2,8+1,75]:0,05=235[6 3/7 – (0,75x:0,35-2:0,35)*2,8+1,75]:0,05=235
1) 75/100х:35/100=75x/35=15/7x
2) 2:35/100=200/35=40/7
3) 6 3/7-15/7x+40/7=85/7-15/7x
4) (85/7-15/7x)*2,8=85/7*28/10-15/7x*28/10=34-6х
5) 34-6х +1,75=35,75-6х
6) (35,75-6х):0,05=35,75:0,05-6х:0,05=715-120х
7) 715-120х=235
-120х=235-715
-120х=-480
х=4
Ответ: х=4