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)
(1/2)*n = 40 // - 40
(1/2)*n-40 = 0
1/2*n-40 = 0 // + 40
1/2*n = 40 // : 1/2
n = 40/1/2
n = 80
n = 80
| 11-4(a+20)=8+a | | -(x-3)+2=5x-8 | | 7h-3k-2k-(-h)= | | u-9.52=1.95 | | 1x+2y=47 | | 3x+ax=7+b | | 6m-17=m+3 | | 32+-2x=8 | | y+2.6=5.23 | | h(t)=20-16t+32 | | 7+b=3x+ax | | -2t-4=14 | | -5x^2+x-3=0 | | 9-2x=2x+1 | | 4x-14=3x+11 | | -x-3=-9+x | | 9*x^2-4*y^2-36*x-8*y+68=0 | | (u-3)*10=40 | | 14-2a=4a-12 | | -8+4=36x | | 15e^1/10t=3 | | 18h-17=7 | | h+[-3]=-0.6 | | h+19=-18 | | j+17=-16 | | 21=5y-2y | | y+8=5(x+9) | | 8h+-18=46 | | 8h-18=86 | | 5y+3=2(y+3) | | 3x^2+5+8=0 | | 5w=-7w-36 |