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2015-05-13T19:33:53+08:00

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2y+5y=-28
We combine like terms and get
7y=-28
We divide the equation by the coefficient of the variable y which is 7 to leave y at the left-hand side.
 \frac{7y}{7} = \frac{-28}{7}  \\ y=-4

Therefore y is equal to -4
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2015-05-15T23:23:18+08:00

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2y + 5y= -28
7y =-28
y= -4......just add the same variables..then, divide it both sides to cancel the numer with variable..,,so thts it..bring down 

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