Question

решите уравнения x/15-4/25=13/25

Answer 1

(5x-4*3)/75=13*3/75
5x-12=39
5x=51
x=10,2

Answer 2

$frac{x}{15} - frac{4}{25} = frac{13}{25} \ \ frac{x}{15} = frac{4}{25} + frac{13}{25} \ \ frac{x}{15} = frac{17}{25} \ \ x= frac{15*17}{25} \ \ x= frac{51}{5} \ \ x=10 frac{1}{5}$