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спортсмен59
@спортсмен59
July 2022
2
4
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реши уравнение:7-(х+1 3/5)=2 4/5
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zhenyaM2002
Verified answer
7-(х+ 1 3/5)= 2 4/5
х+ 1 3/5 = 7- 2 4/5
х+ 1 3/5 = 4 1/5
х=4 1/5 - 1 3/5
х=(21-8)/5 =13/5
х= 2 3/5
Проверим: 7- (2 3/5 + 1 3/5 ) = 2 4/5
7- 4 1/5 = 2 4/5
2 4/5= 2 4/5
28 votes
Thanks 55
andrisd
Verified answer
7-(x+1 3/5)=2 4/5
7-x-8/5=14/5
-x=14/5+8/5-105/15
-x=42/15+24/15-105/15=-39/15
x=39/15=2 3/5
8 votes
Thanks 9
zhenyaM2002
Во второй строчке ошибка : 7 -х -8/5 = 14/5 ... И дальше уже не правильно. Исправь!
andrisd
Спасибо, опечатался....
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Answers & Comments
Verified answer
7-(х+ 1 3/5)= 2 4/5х+ 1 3/5 = 7- 2 4/5
х+ 1 3/5 = 4 1/5
х=4 1/5 - 1 3/5
х=(21-8)/5 =13/5
х= 2 3/5
Проверим: 7- (2 3/5 + 1 3/5 ) = 2 4/5
7- 4 1/5 = 2 4/5
2 4/5= 2 4/5
Verified answer
7-(x+1 3/5)=2 4/57-x-8/5=14/5
-x=14/5+8/5-105/15
-x=42/15+24/15-105/15=-39/15
x=39/15=2 3/5