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 = 40 // - 40
(2*a)/5-40 = 0
2/5*a-40 = 0 // + 40
2/5*a = 40 // : 2/5
a = 40/2/5
a = 100
a = 100
| y+1=2y+5 | | 8-7n-n=-6n+10 | | 1254-150=3n | | 15x-6=12+2x | | 7+2x+5=18 | | 1/3x-1/4(x-1)=4x | | 4xy^2+3x-5= | | 3x=5x-48 | | x^9=30x^2 | | 16-(3+6)+52x14/2 | | -(6x-11)+2x=-21 | | 9x-(5x+7)=19 | | 8a-5-9a=4+a-6 | | 7x+5/4=x+2 | | (1/x^2)+3=150 | | -23-v=-5(5v-5) | | 3x^3+rx^2+sx+4=0 | | 5l-4+6_7l=3+6l | | 3x^2-57x+27=0 | | 7(x-3)=3(x+1) | | X/4+7/4=5/6 | | x+4.7=9.2 | | 2x/3=x/4-6 | | (-8.6)(-0.07)= | | -8/3+1/7I=-7/2 | | 56x+62=58.80 | | -9=8b-(2b-3) | | .43x+2=1 | | x^2=99-2x | | 2x/3=6-(x/4) | | 93/108 | | Y-5.8=15.3 |