Question

resolva a equacao 10y-5(1+y)=3(2y-2)-20
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Answer 1

10y - 5(1 + y) = 3(2y - 2) - 20
10y - (5 + 5y) = 6y - 6 - 20
10y - 5 - 5y = 6y - 6 - 20
10y - 5y - 6y = - 6 - 20 + 5
-y = -21
y = 21