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-((1/3)*x)-((2/3)*x) = 400 // - 400
x-((1/3)*x)-((2/3)*x)-400 = 0
x+(-1/3)*x+(-2/3)*x-400 = 0
-400 = 0
x belongs to the empty set
x belongs to the empty set
| 39*2+28*2+x=180 | | -5x-30=15 | | 8-4x=2x+74 | | 3y=18+3 | | 5z^2+22z-15= | | 6(x-10)=90 | | .5(x+4)+.3(x+9)=20 | | 0.3/1=12/x | | y=12-44 | | 6+6n=-2+2n | | t^3-3t^2+2=0 | | 1-2m-4=5 | | 2y-59y=9y+29 | | 10(3+a)=4s | | 12(x+9)=-100 | | 14h-12h=14 | | x+96=245 | | 5(7x+5)=35x-1 | | 2g-g=20 | | 3x(2x-8)+2x=8x-4 | | 75+25x=25+70x | | x/2.5=7 | | cos19pi/12 | | -48=3(v-8) | | 4m-3m=8 | | 13w-11w=18 | | -5(-9x-18)=540 | | 17=4c+17 | | (-99e^2t)+(149e^3t)=0 | | 6(4x+5)=-3(7x-9) | | 15mi=ft | | 17.3=X |