Question

if X/7=Y/9 then solve the equation (2x+7) : (2y+9) ???

Answer 1

Answer:

Given that,

$\frac{x}{7} = \frac{y}{9} \\ then \\ x = \frac{7y}{9}$

Then,

$2x + 1 = 2y + 9 \\ 2x = 2y + 8 \\ x = y + 4$

From earlier,

$\frac{7y}{9} = y + 4 \\ 7y = 9y + 36 \\ 2y = - 36 \\ y = - 18$

For x ,

$x = y + 4 \\ x = - 18 + 4 \\ x = - 14$

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