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)
1/4 = r/4+(3*r)/4-(7/4) // - r/4+(3*r)/4-(7/4)
1/4-(r/4)-((3*r)/4)+7/4 = 0
(-3/4)*r-(r/4)+1/4+7/4 = 0
2-r = 0 // - 2
-r = -2 // * -1
r = 2
r = 2
| 3+x/4-1=-7 | | 4x-1=11x | | 3n+5(n-2)=3(n-5) | | -19-4x=117x | | x+4/5=2 | | 6x^3-6x^2-36x=0 | | 16x-4=14x+34 | | 11=5+3/2x | | x+3=2x-10 | | 2(x-20)=10 | | 16x-4+14x+34=180 | | 4(3x+3)=60 | | 4(x-2)=3(x-4) | | 7(5x+9)=308 | | 10x+(-3)=27 | | 9(6-2m)=-12(m-8) | | -3+2x=12+5x | | 11/5x+2=0 | | -18x^4+6x^3-3x^2=0 | | 7(-4+5x)=112 | | 9(6-2m)=-12(v-8) | | -3(1-4x)=141 | | -23=3y-5 | | -5(11-3x)=6x-4 | | 1+6x=-3x+109 | | -(4x-4y)/(9x)+(7x-4y)/(6x)-2 | | 8v=12.8 | | 38-7m=3(6-4m) | | 23x-7=39 | | 4x+4=4+6x | | 86-4x=74-4x | | 91+x+88+92+133=540 |