If it's not what You are looking for type in the equation solver your own equation and let us solve it.
2.8/(9-5) = r
2*x+12 = 3*x-x+4
x/7 = -x/2
(x/2)*x+5+6+9 = 0
2*(3/4)-(1/2) = 0
| 0.8+1.2=2.4x | | |x/4|=9/(50-|-10| | | t^2-2t-200=0 | | 2x^2-2x-112=100 | | A+c=240 | | (x)(x-3)(5)=270 | | k=8k+32 | | (x-5)(x+5)+12x=6x+12 | | 2.8/(9-5)=r | | 7y^2+1=X | | 6x+x^2=-10 | | 90+65+60+x=360 | | 20a+12c=4392 | | x+0.3=294 | | 90+70+75+x=360 | | -1+5x-4x=-2 | | x+18.5=87 | | 2Xsquared+2x-12=0 | | 5x-7=(-3) | | 130+65+2x+x=360 | | 23+3x+2x=73 | | y-.4=-.3333 | | x/7=-x/2 | | 4.3+g=4.1-1.9 | | 8r-29=-8+5r | | 3x-4=-6+x | | 2y(3/4)-1/2 | | 1=-4.9t^2-5t+2 | | 1.3+m=6.5 | | 2(3/4)-1/2 | | 3-7x+28=-4 | | 2m+3=24 |