Question

Y-3(2y-7) = 76



Need help

Answer 1

`y - 3(2y - 7) = 76 \\ y - 6y + 21 = 76 \\ - 5y = 55 \\ y = (55)/(( - 5)) \\ \boxed{y = - 11}`

-11 is the right answer.

Answer 2

y =
`\bf~(55)/(-8)~or~-6,875`

Explanation:

y - 3(3y - 7) = 76

y - 9y + 21 = 76 (here we get rid of the parenthesis)

y - 9y = 76 - 21 (here we take 21 to the other side of the equation)

y - 9y = 55 (here we subtract 76 - 21)

-8y = 55 (here we subtract y - 9y)

y = 55/-8 (here we take -8 to the other side of the equation)

y =
`\bf~(55)/(-8)~or~-6,875`

Hope it helped,

BiologiaMagister