Помогите 7y-y+3y =61,2

Question

Помогите 7y-y+3y =61,2

Answer 1

7y-y+3y=61,2
6y+3y=61,2
9y=61,2
y=6,8

Answer 2

7у-у+3у=61,2.
6у+3у=61,2.
9у=61,2.
у=61,2:9.
у=6,8.
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Ответ:у=6,8.