Question

Calculati :7/x+9/12=x/12

Answer 1

$\frac{7}{x} + \frac{9}{12} = \frac{x}{12}$

$\frac{7*12}{12*x}+ \frac{9*x}{12*x} = \frac{x}{12}$

$\frac{84+9x}{12x} = \frac{x}{12}$

$\frac{84+9}{12} = \frac{x}{12}$

$\frac{93}{12} = \frac{x}{12}$

==> x = 93