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)
R/4 = 5/7 // - 5/7
R/4-(5/7) = 0
R/4-5/7 = 0
1/4*R-5/7 = 0 // + 5/7
1/4*R = 5/7 // : 1/4
R = 5/7/1/4
R = 20/7
R = 20/7
| 240=4r+3s | | 4(x-7)=-8x-8 | | -3y+1=y+9-4y | | -9x+7=97 | | 57=112z | | 7/9=8/m | | 2(n-1)=6 | | -(12+3w)-(4w-8z)= | | X/10=10/4 | | 240(60x+40x)=12800 | | 21=1/2x | | 2/4=3/5n | | -.045=0.03x+0.15 | | X/6=7/8 | | 3x+2x-15=45 | | -5x/3 | | 14x-18=66 | | 153=16x | | 52-5r=2 | | -2=-8v+6(V+3) | | 2n-16=30 | | x=sin-1(0.8) | | 8800x+x=98240 | | -9-7a=3-5a | | 11x+-4=-26 | | 15=n+3.8 | | 25-7y= | | f=2*8 | | 2x^3-3x^2-12x+13=0 | | 2x+-3=-23 | | x-6=158 | | (51x^3-42x)/(-3x) |