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)
(y*(28*x+6400))/100+28*x+6400 = 11050 // - 11050
(y*(28*x+6400))/100+28*x-11050+6400 = 0
(y*(28*x+6400))/100+(28*100*x)/100+(-11050*100)/100+(100*6400)/100 = 0
y*(28*x+6400)+28*100*x-11050*100+100*6400 = 0
2800*x+28*x*y+6400*y-1105000+640000 = 0
2800*x+28*x*y+6400*y-465000 = 0
(2800*x+28*x*y+6400*y-465000)/100 = 0
(2800*x+28*x*y+6400*y-465000)/100 = 0 // * 100
2800*x+28*x*y+6400*y-465000 = 0
2800*x+6400*y-465000 = 0 // - 6400*y-465000
2800*x = -(6400*y-465000) // : 2800
x = (-(6400*y-465000))/2800
x = (465000-(6400*y))/2800
x = (465000-(6400*y))/2800
| 8+4(2x+8)=96 | | 6x-10-4x=3x+7 | | x^2-mx+2m-4=0 | | 2(2a+2)=(3a+3) | | -24=-24x | | 1.66+3x=4/5x+12 | | 15x=15+4x+4 | | 4/7-3/7=11 | | 9w+12=(w+3) | | -5w-5(6-2w)=0 | | -95=19x | | 6(3x-7)-(x+9)=3x+5+10x | | 3/4-4/13 | | 2b-3-6b-6= | | 4-3h+2h=11 | | 140=-14x | | N*2+8=80 | | 11x-2(x-5)=9(x+1)+4 | | (4500+20x)+(4500+20x)*y/100=7800 | | 5*x+9/8=5 | | 3(1x+2)-7=11 | | -54+13.5x=972 | | 8x^2-7x-k=0 | | 4(-8a+2)=-28+4a | | 2+1/2(a-1)-1 | | 3(1x+2)-7=7 | | x+2.50x+20=41 | | 5x+3/4=-12 | | x+21/2x+20=41 | | 1/8(18+s)=7 | | 110+3x+2=180 | | 7x-10x+4=12 |