If it's not what You are looking for type in the equation solver your own equation and let us solve it.
a in (-oo:+oo)
(2*a)/5 = 20 // - 20
(2*a)/5-20 = 0
2/5*a-20 = 0 // + 20
2/5*a = 20 // : 2/5
a = 20/2/5
a = 50
a = 50
| 5x-40=5 | | 7-8x=23-36x | | x^2+3x-360=0 | | 5x/2=x-6 | | a/3+2=14 | | 9-10x= | | 8-9x=20-16 | | x^2+4x-12=9 | | -8-8x=23-36x | | 3=11-4y | | 19=3y-8 | | 2x^2-12x-144=0 | | 8y+5=61 | | 0=2y-4 | | 27-5y=2 | | 1/4p-3/8p=2 | | 2(x+5)=5(2x-1) | | 8k-5=5k+1 | | -2x+1+3(x-1)=-4+(-x)-2 | | 9+6y=15 | | 5y-1=39 | | 6x+2(x+3)=10 | | -6a+6b+6c=18 | | 1/2a-1/2=-6 | | 3x+2(x+3)=10 | | -3.25+7/4 | | 9=1y+5 | | cx+d=bx-2d | | 12-1y=7 | | (2t-8)-1/2(9-4t)+5/2= | | V-3+8=22 | | 9y-7=47 |