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hobitmaksim
@hobitmaksim
July 2022
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Как решить кто ответить тому 10 баллов 5 класс
3(x+7)=75
Ещё 14(12-x)=70
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Yakutova
Verified answer
3(х+7)=75
3х+3*7=75
3х=75-21
3х=54
х=54/3
х=18
14(12-х)=70
12-х=70/14
12-х=5
х=12-5
х=7
0 votes
Thanks 2
DashaBori23
Verified answer
3(x+7) = 75
3x+21 = 75
3x = 75-21
3x = 54|:3
x = 18
14(12-x) = 70
168-14x = 70
-14x = 70-168
-14x = -98|:-14
x = 7
1 votes
Thanks 1
DashaBori23
у нас вышли одни и те же результаты, нет разницы каким способом решать
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Answers & Comments
Verified answer
3(х+7)=753х+3*7=75
3х=75-21
3х=54
х=54/3
х=18
14(12-х)=70
12-х=70/14
12-х=5
х=12-5
х=7
Verified answer
3(x+7) = 753x+21 = 75
3x = 75-21
3x = 54|:3
x = 18
14(12-x) = 70
168-14x = 70
-14x = 70-168
-14x = -98|:-14
x = 7