Question

[2017-(225+5×a) :4]:3- 287=362

Va rog.

Answer 1

[2017-(225+5*a):4]:3-287=362
[2017-225-5a:4]:3-287=362
1792-$\frac{5}{4}$a:3=362+287
$\frac{1792*4+5a}{4} :3=$649
$\frac{7168+5a}{4}* \frac{1}{3}$=649
$\frac{5}{12}a=649- \frac{7168}{12}$
$\frac{5}{12}a= \frac{620}{12}$
a=$\frac{620}{12}* \frac{12}{5} =124$