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)
15/250 = x/300 // - x/300
15/250-(x/300) = 0
3/50-1/300*x = 0 // - 3/50
-1/300*x = -3/50 // : -1/300
x = -3/50/(-1/300)
x = 18
x = 18
| 250/300=x/15 | | X^2-X-1806=0 | | (3y+8)(6+y)=0 | | 9d+5=7d+15 | | 3x+52=9x-14 | | 2x+3x+25=0 | | 1/4x-3/8y=-2 | | 3(2/7)*14=46 | | 3(2/7)*14 | | -70.00-2.25x=-182.50 | | y=1/2+3x | | 63y=31(2y+5) | | 32/7*14 | | 15x^3-43x^2-30x+72=0 | | h(t)=-16t^2+128t+0 | | 36x+4y=-44 | | xy-72x+10y=0 | | 2log(x)=log(6x-90)+1 | | 16x^2+50x+100=0 | | 2/7x+3 | | 2/15x=20 | | 2/15x=14 | | m/20=n | | (2y-7)(3y+1)=0 | | 15x-3y-7x+4y-8x+x= | | y-15=z | | Y=4(5x-10) | | -4=12-2 | | B^2+12b+36=o | | -7(w-7)=-3w+33 | | 2x-20=8(x-1) | | 8(x-4)=6x-44 |