Question

calcule o valor de 7x sobre 2+ 5 x sobre2

Answer 1

Ola

7x/2 + 5x/2 = 12x/2 = 6x 

Answer 2

Olá!

$\frac{7x}{2} + \frac{5x}{2}\ \ \ \ \textgreater \ \ \ \ \frac{12x}{2}\ \ \ \ \textgreater \ \ \ \ 6x$

qualquer dúvida comente ;)
Bons estudos!