If it's not what You are looking for type in the equation solver your own equation and let us solve it.
w in (-oo:+oo)
(-1/2)*w = -7/2 // + -7/2
(-1/2)*w-(-7/2) = 0
(-1/2)*w+7/2 = 0
7/2-1/2*w = 0 // - 7/2
-1/2*w = -7/2 // : -1/2
w = -7/2/(-1/2)
w = 7
w = 7
| n+10=16 | | -5/6b=1/2 | | 1/2m=-6 | | x-7=-77/12 | | w/3=-3/4 | | 8+w=95/11 | | w-2=-9/7 | | 41/10=b+4 | | a+4=49/11 | | m+7/8=11/8 | | n-1/2=-5/4 | | 5k=35/9 | | d/4=-6 | | -1/8=b-1 | | 3w+6=4w+0 | | 5=a+1 | | b/-3=-1 | | 3/4n=15/2 | | k+3/5=-3/20 | | 5/6t=5 | | k-3/5=-1/10 | | n-4=-25/6 | | b+9/10=13/20 | | -5/8+b=35/8 | | 6+m=20/3 | | 2sin^2x+5sinx+2=0 | | -5/7+d=79/7 | | m+2/3=-10/3 | | b-6=-2 | | m+3/4=-1/4 | | t+1=7/10 | | -1/2+w=-7/2 |