If it's not what You are looking for type in the equation solver your own equation and let us solve it.
n in (-oo:+oo)
-5*n = -45 // + 45
45-5*n = 0
45-5*n = 0 // - 45
-5*n = -45 // : -5
n = -45/(-5)
n = 9
n = 9
| 1/3+m=32/33 | | 13=t+10 | | -2/7k=-12/77 | | -30/11=k-2 | | 93/10=a+9 | | 1+m=10 | | w-3=-18/7 | | 3/7n=-30/7 | | w+4/7=-3/7 | | -2/5a=-4/5 | | 14x+21=4x+221 | | 1/5+a=-29/55 | | b+5/7=83/77 | | a-3/5=-53/5 | | 27/8=t+3/8 | | 2/5x=1/6 | | k/6=-2 | | 2x^2-(a+3)x+(3b-2)=0 | | k/-7=6 | | x-5/7=23/7 | | 7+t=47/7 | | 6d=-9/5 | | 21=a+10 | | t/2=-7 | | 5/6m=-5/3 | | w+1/2=15/2 | | b/-2=-2/3 | | 2/3+a=-25/3 | | a2+1/12a-1/2=0 | | a2+17a+70=0 | | m2-5/12m+1/24=0 | | k2-87/88k+5/22=0 |