Question

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Answer 1

а)

$5 times (y + 2) + 10y = 100 \ 5y + 10 + 10y = 100 \ 15y + 10 =100 \ 15y = 100 - 10 \ 15y = 90 \ y = 6$

б)

$2 times (y + 2) + 6y = 52 \ 2y + 4 + 6y = 52 \ 8y + 4 = 52 \ 8y = 52 - 4 \ 8y = 48 \ y = 6$