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)
1.4/3 = x/7.5 // - x/7.5
1.4/3-(x/7.5) = 0
1.4/3-0.13333333*x = 0
0.46666667-0.13333333*x = 0 // - 0.46666667
-0.13333333*x = -0.46666667 // : -0.13333333
x = -0.46666667/(-0.13333333)
x = 3.50000011
x = 3.50000011
| -2a+6a=12 | | 3s-7=17+7s | | 4/5z+z=8 | | x^2+2=14 | | 2a+4b=d | | -2n+5n=12 | | m^2+5m+50=0 | | ab=6+cd | | -4m+2n=6 | | 7/9=x/17 | | 7b^2+13b-2=0 | | 4(2x+1)-7=26-3(-2x-5) | | 6-28x=2 | | 4-(w-3)+2(3w-5)=6 | | 1008=(x+6)(2x-8) | | -n+4n=15 | | 1/8y=5 | | 16y=3y+39 | | 4-(x-3)+2(3w-5)=6 | | (3x-6)(3x-6)=21 | | m+1.2=8.8 | | -7.4=(w/8)+5.4 | | M^2=12m+20 | | 4t-5=11t+6 | | 4x+31=7x+7 | | -2x-.1y=-4.1 | | 5/8x+20=85 | | -7.4=w/8+5.4 | | x=-5/6y | | 2t+5t^2-3=0 | | Y=3600-(0.8)Y | | 7/d+5=10/d+2 |