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)
(2/6)*x = 420 // - 420
(2/6)*x-420 = 0
1/3*x-420 = 0 // + 420
1/3*x = 420 // : 1/3
x = 420/1/3
x = 1260
x = 1260
| f(-1)=2x^3+3x^2-1 | | x^2+8x-6=1 | | 32.5x=50 | | -5x/9-8-7 | | 20x+10x=150 | | f(3)=x^3+3x^2-34x+48 | | 4/5=(x-3)/9 | | cos(4*x)+cos(2*x)+sinx+sin(5*x)=0 | | 32x=50 | | 8x+6y=24.50 | | 425/15x=5/15 | | x^2-xy=6 | | 3w^2+17w+10=0 | | -10(x+3)28=-16-16 | | -4n+7=-3n-8 | | x+x+5+6x=20 | | 122=2(w+35)+2w | | -10(x+3)+29=-16-16 | | (x+7)(x-6)(x-9)=0 | | x+2*x+(x+1)=85 | | 10y+5=3y-2 | | 5x+12=18+3x | | f(x)=6x^3-2x^2+5x+2 | | -4(x+y)+5(-3y+5x)= | | -2+14=14x-3-13x | | 5x+12=18-3x | | f(x)=x^3+x+30 | | 2m^2-8m+26=6+5m^2 | | a=h(B+b) | | (2x+5)+(3x-8)=6 | | 4x-2y=18fory | | 10y=3x-4 |