Question

plzz solve Q 11 in the following image

Answer 1

Q 11
exampleSujata = xSushma = y
the first equation$\frac{x}{y}\ =\ \frac{4}{3}$x = $\frac{4}{3}\ -\ y$x-8 = $\frac{4}{3}\ -\ (y-8)$3(x-8) = 4(y-8)3x-24 = 4y-323x-4y = -8
the second equation$\frac{x}{y}\ =\ \frac{7}{6}$x = $\frac{7}{6}\ -\ y$x+9 = $\frac{7}{6}\ -\ (y+9)$6(x+9) = 7(y+9)6x+54 = 7y+636x-7y = 9
answer
method of elimination
3x-4y = -8|·2| 6x-8y = -166x-7y = 9|·1| 6x-7y = 9
6x-8y = -166x-7y = 9--------------   ------x = -25x = 25
3x-4y = -83.25 - 4y = -875 - 4y = -8-4y = -834y = 83y = 20,75