If it's not what You are looking for type in the equation solver your own equation and let us solve it.
d in (-oo:+oo)
d/5 = 15 // - 15
d/5-15 = 0
1/5*d-15 = 0 // + 15
1/5*d = 15 // : 1/5
d = 15/1/5
d = 75
d = 75
| 25=-87-8x | | -4(a+5)=-137 | | y=-4/7x-6 | | 6x+72=24 | | 27-3x6/2 | | 20=5-r | | p/12=9 | | n-24/8=n/6 | | 7x-7(3x-8)=168 | | 16x-3=-18+x | | 18+x/-3=8 | | 22.50+1.50b=126 | | x+1+4=0 | | 0.66666666666h+5=-4-0.33333333333h | | n-4/8=n/6 | | -3x+5=5(-3) | | 3x^2-9x-57=0 | | 22.50+1.50=126 | | (2x+18)(4x)= | | 8=89t+6 | | -5+x/10=-9 | | 53+12x=125 | | y=4/7(x)-6 | | 6n^2-42n=0 | | 22.50-1.50b=126 | | -4+r+=11 | | k-12/12=-4 | | xy+z=9forx | | y+19.3=21 | | 7-4.9t=1+7.6t | | 10/3n=2/3 | | 13-2-s=11-s |