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)
R/2 = r+7/4 // - r+7/4
R/2-r-(7/4) = 0
R/2-r-7/4 = 0
1/2*R-r-7/4 = 0
x naleu017Cy do R
x in (-oo:+oo)
| c-24=7c | | x=140-(x/2) | | -t^2+9t+1=0 | | 8v^2=72 | | 5z=13-48 | | 6f^2+f=0 | | -140+3x+12x=70 | | 6b+(4b+3c)= | | .5(-60+3)=3(.1+.16*-60) | | 2x^2=6+5x | | -14.8=r+11.7 | | 3x-8y=3 | | 30/p+22 | | (P/2)=(p+3/4) | | x-.35x=13.65 | | 34/p+14 | | .5(p+3)=3(.1+.16p) | | 5x+47=12x-72 | | y=164+32.3*2.2 | | -7d^2-8d-1=0 | | 3(3x-1)=4(2x-1) | | 2x-4+12=4x | | 7/10y+1/2=4 | | 3n^2+6n-63=0 | | 12x+4=4(3x+1)-x+4 | | 2y+8=-4(y-6) | | Y+6(4)=11 | | 3s^2+9s+6=0 | | 12*9/2 | | 3.5x-2.4=3.9+1.4 | | y=164+32.3*x | | 4x^2-24x-11=0 |