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MishenkaRRR
@MishenkaRRR
October 2021
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Срочно, помогите. Алгебра 7 класс.
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dimanchyck2000
А)8х + 5у = 22|•3
5х + 3у = 12|•5
24х + 15у = 66|
25х + 15у = 60|-
х = -6
у = (60 + 150):15 = 14
б) Домнаживаем первое уравнение на 6
3х - 2у = 6
3х/4 + 2у = 24
15х/4 = 30
15х = 120
х = 8
у = 18
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Answers & Comments
5х + 3у = 12|•5
24х + 15у = 66|
25х + 15у = 60|-
х = -6
у = (60 + 150):15 = 14
б) Домнаживаем первое уравнение на 6
3х - 2у = 6
3х/4 + 2у = 24
15х/4 = 30
15х = 120
х = 8
у = 18