If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
20 = (5/2)*x // - (5/2)*x
20-((5/2)*x) = 0
(-5/2)*x+20 = 0
20-5/2*x = 0 // - 20
-5/2*x = -20 // : -5/2
x = -20/(-5/2)
x = 8
x = 8
| 19=2j+7 | | -2(6*3)= | | 4=20/3x | | 59=y^2+10 | | -(6*3)= | | 20+4K= | | 3m+6+8m+2= | | 8 = 43(5x+3) | | 7x+15-6x=-8-10 | | z-16=-11 | | y-4/3=-4/9(x-3) | | 12=21/2x | | X/10=7/17 | | 20-48=3(x-3)-4 | | 3(9-x)-2(y+2)= | | 88/11 | | =3(9-x)-2(y+2) | | x+30+2(x-30)=180 | | 10-3f=1 | | 2w-4+w+2w-40+w=220 | | 14-x/3=21 | | 2g^2=32 | | -5a-6=18 | | 8x+16y=39 | | 6(6y-4)=24 | | 6x+8x=35 | | V/10=7/17 | | 4=10/6x | | 13+5y=58 | | .4X=9-5 | | 31=-6f-5f | | =28x^4-84x^8+10x^4 |