Question

plz solve the equation plz
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Answer 1

Answer:

$\frac{y}{y + 10} = \frac{8}{7}$

( by cross multiplication )

7y = 8(y+10)

7y = 8y + 80

7y - 8y = 80

-y = 80

y = -80 ......Ans

Answer 2

Step-by-step explanation:

We Have :-

$\dfrac{y}{y + 10} = \dfrac{8}{7}$

To Find :-

$y$

Solution :-

$\dfrac{y}{y + 10} = \dfrac{8}{7} \\ \\ \\ cross \: multiplying \: \\ \\ \\ y \times 7 = 8(y + 10) \\ \\ \\ 7y = 8y + 80 \\ \\ \\ 7y - 8y = 80 \\ \\ \\ - y = 80 \\ \\ \\ y = - 80 \\ \\ \\ checking \: the \: answer \: by \: putting \: this \: value \: in \: the \: equation \: \\ \\ \\ \dfrac{ - 80}{ - 80 + 10} = \dfrac{8}{7} \\ \\ \\ \dfrac{ - 80}{ - 70} = \dfrac{8}{7} \\ \\ \\ \dfrac{ 8}{ 7} = \dfrac{8}{7} \\ \\ \\ hence \: proved$