Решите уравнение 5*(19-у)=99=124

Question

Решите уравнение
5*(19-у)=99=124

Comments

=99=124?

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+99=124

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5* (19-у)+99=124

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у=4

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95-5у+99=124

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-5у=124-95-99

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-5у=-70

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у=14

Answer 1

5*(19-y)+99=124
5*19-1y+99=124
-1y=124-95-99
-1y=-70
-y=-70:(-1)
-y=70