Question

Как решить уравнение?
15 ⋅ (22-x) = 13 ⋅ (22+x)

Answer 1

$15*22-15x=13*22+13x \ 15*22-13*22=13x+15x \ 28x=22*(15-13) \ 28x=44 \ x= frac{44}{28} \ x= frac{11}{7} \ x=1 frac{4}{7}$