Zgjidhja e ushtrimit 3

Në barazimet e mëposhtme, gjeni numrat e panjohur $p$, $q$ dhe $r$.

1. $7(3x-\boxed{p}) = \boxed{q}x+28$
2. $\boxed{p}(5x-2)+\boxed{q}=15x$
3. $3(2x-\boxed{p}) + \boxed{q}(1-2x) = 2(x+4)$
4. $\boxed{p}(4x+7) + 5(3x-2) = 27x+\boxed{q}$
5. $6(2x+\boxed{p}y-1) + \boxed{q}x=\boxed{r}(x+3y-3)$
6. $2x(\boxed{p}x + 3) + \boxed{q}(2x-3) = 8x^2+\boxed{r}$