Question

Решите уравнение:
у(+2)+3 1/2у+(у-2)=19.5

Answer 1

$y + 2 + 3 frac{1}{2} y + (y - 2) = 19.5 \ y + 2 + 3 frac{1}{2} y + y - 2= 19.5 \ 5 frac{1}{2} y = 19.5 \ y = 19.5 div 5.5 = frac{195}{10} div frac{55}{10} = frac{195 times 10}{10 times 55} = frac{39}{11} = 3 frac{6}{11} \ y = 3 frac{6}{11}$