If it's not what You are looking for type in the equation solver your own equation and let us solve it.
R in (-oo:+oo)
25/4 = R/5 // - R/5
25/4-(R/5) = 0
25/4-1/5*R = 0 // - 25/4
-1/5*R = -25/4 // : -1/5
R = -25/4/(-1/5)
R = 125/4
R = 125/4
| 4y^2=400 | | .1*.56*x+.5x=48000 | | 2(4m-2)-4=-64 | | 4a-6a^3=0 | | 42*1/2 | | 2e+3=7e+2 | | 2(7x-4)=5(2x+4) | | (4x^2-3)-(x^2+5x+1)= | | q/18 | | 3(2*x-4)=8 | | 6/7/12/12=4/x | | 9x+3y=2x | | 1.6=a^7 | | 2(1y+3)=9y-(2+4) | | -4x+16=4x+8(2x+2) | | 8(-x-4)=-88 | | 2(1y+3)=9y+(2-4) | | 13b-4=48 | | (4x+y)dy+(y-2x)dx=0 | | -24=u/ | | 2(1y+3)=9y-2+4 | | 4567457-865= | | 3z-29=-5 | | 8w-8=4 | | 2x+3(x-6)=-3 | | 6z+23=59 | | 64+32n= | | 2x^2+3=26 | | -3u(u+1)=0 | | 43x+24=24 | | 5z+9=-6 | | 2x-3y-5y+9x+6= |