Question

решите уравнение:
$frac{x}{5} + frac{x}{9} = - frac{14}{15}$
1)-3
2)1
3)3
4)7​

Answer 1

$frac{x}{5}+frac{x}{9} =-frac{14}{15}\\frac{9x+5x}{45}=-frac{14}{15}\\frac{14x}{45}=-frac{42}{45}\\14x=-42\\x=-3$