Question

1/2-(9-x)/11=3x/12. Find the value of x .

Answer 1

$(11 - 18 + 2x) \: by \: 22 = 3x \: by \: 12$
$( - 7 + 2x) \: by \: 22 = 3x \: by \: 12$
now cross multiply
$12 \times ( - 7 + 2x) = 22 \times (3x)$
$- 72 + 24x = 66x$
$- 72 = 66x - 24x$
$- 72 = 42x$
$x = - 72 \: by \: 24$
$x = - 3$