Răspuns :
(3×a)-(a:2)=525
3a - (a/2) = 525 /x2
6a - a = 1050
5a = 1050
a = 1050 : 5
a = 210
3a - (a/2) = 525 /x2
6a - a = 1050
5a = 1050
a = 1050 : 5
a = 210
[tex]3a - \frac{a}{2} = 525 \\ \frac{3a}{1} - \frac{a}{2} = 525 \\ \frac{2 \times (3a)}{2} - \frac{a}{2} = 525 \\ \frac{6a - a}{2} = 525 \\ 5a = 525 \times 2 \\ 5a = 1050 \\ a = 210[/tex]