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)
9/2 = x/7 // - x/7
9/2-(x/7) = 0
9/2-1/7*x = 0 // - 9/2
-1/7*x = -9/2 // : -1/7
x = -9/2/(-1/7)
x = 63/2
x = 63/2
| 25-x=1 | | 4x-35+21=1024-x | | 13/x-26/16 | | 5*-3-(-12)= | | 6/x=18/21 | | X2/5 | | x/5-3=-18 | | 6/x-18/21 | | 14/15=x/75 | | .91=1-x | | 21/7 | | x/12-30/36 | | x/5=40/25 | | 8x-7-4x=x+2+x | | 17+3x=117-x | | 6x-8=-86 | | 1/8x+6=7 | | 5b/4=15 | | 2x^3-5x^2+lnx=0 | | 8+7i/3-4i | | 50=x+2(18) | | $15.50=26-5p-2p | | 25r^2-40r+16=0 | | 6+7*3-40= | | 10r^3+70r^2=0 | | -(x-4)=2x+5 | | x^2-2xy+y^2=75 | | x^2-2xy+y^2+75=0 | | 2f(5f-2)-10(f^2-3f+6)=8f(f+4)+4(2f^2-7f) | | 10x^2-6x-16=0 | | 8x^4+2x^2-1=0 | | x^(3/5)=31 |