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)
(70000*x)/3 = 400 // - 400
(70000*x)/3-400 = 0
70000/3*x-400 = 0 // + 400
70000/3*x = 400 // : 70000/3
x = 400/70000/3
x = 3/175
x = 3/175
| -6y-4=-4y | | 0.75+d=4.5 | | v^2+4v-21= | | 253v+1=1-125 | | 39-12w=16w-7 | | 7(2x-3)=6(x-5)-17 | | (3/4m-4n-7p-2)-4 | | 42-t=51 | | 12.78+2.75x=5.26+7.23x | | 5k+5=3k+5 | | c+1.25=5 | | -(c+5)+3(5c-4)= | | x+(-5x)=12 | | 3ln(5x-1)+5=8 | | 25+t=57 | | -1.6x^2+-3.2x+18=0 | | 5x^5y^3+25x^3y^2+15xy= | | 9+x^2+11x=2x-11 | | J+4-(-17)= | | n-0.2=0.3 | | 7y+25-y-11= | | 2/7n=1/14 | | 3(2x-2)+5(x+6)=13 | | -12x+12y=0 | | 5x+2=2(5x-4) | | 11-m-0.9= | | 3(4z+2)=-3z-24 | | 3-7x-5x=27 | | -17-n=-9 | | n-0.6=0.3 | | 12x+12y=0 | | 3x+5x=3-3x |