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)
((x/3)*x)/2 = 20 // - 20
((x/3)*x)/2-20 = 0
1/6*x^2 = 20 // : 1/6
x^2 = 120
x^2 = 120 // ^ 1/2
abs(x) = 2*30^(1/2)
x = 2*30^(1/2) or x = -(2*30^(1/2))
x in { 2*30^(1/2), -(2*30^(1/2)) }
| (5/8)=(p/24) | | x+3x/2=15 | | 6a-1=a+14 | | (3/d)=(18/3) | | 42-4/3 | | 42/4/3 | | 7x+11y=100 | | (9/y+1)=(18/54) | | x+3x+15=121 | | (R/21)=(3/63) | | 3a+7=5 | | (4/6)=(8/r) | | (R+1/4)=(3/4) | | 53t=477 | | m/17=14 | | k+32=48 | | (0.1/2)=(0.5/r) | | 4*x*3=3 | | (1/t)=(5/3) | | (-3/x)=(2/8) | | 9k/17+8=161 | | 14x/9-1=125 | | q/8+1=5 | | 23x+11y=2 | | t*15-5=40 | | m*9+3=30 | | q-9=17 | | 7(v+4)-3v=2(2v+4)-15 | | 2.5(b-12.4)=19 | | 0.45(12)+0.05x=0.15(18+x) | | (8)+(-4)+(-7)+20= | | (3X-48)+156=180 |