If it's not what You are looking for type in the equation solver your own equation and let us solve it.
c in (-oo:+oo)
(7*c+3)/4 = (9-(5*c))/12 // - (9-(5*c))/12
(7*c+3)/4-((9-(5*c))/12) = 0
(7*c+3)/4-((9-5*c)/12) = 0
(7*c+3)/4+(-1*(9-5*c))/12 = 0
(12*(7*c+3))/(4*12)+(-1*4*(9-5*c))/(4*12) = 0
12*(7*c+3)-1*4*(9-5*c) = 0
104*c = 0
(104*c)/(4*12) = 0
(104*c)/(4*12) = 0 // * 4*12
104*c = 0
104*c = 0 // : 104
c = 0
c = 0
| 3-3/4x=3(3-1/4x) | | z^2-7z+12= | | 3/2*15 | | 4(3x-7)=2(6x+9) | | -8p+3+9p=11 | | 7-2x=x-(2+x) | | -2/9x3/9 | | -2+8=-16 | | 23=5-.67x | | (-4y^2+4y+5)-(3y^2-7y-2)+(-3y^2+5y+5)= | | (3m+5)-(6m+7)+(4m+3)= | | (6e+4)/5=(3e+1)/2 | | 2x+5x+10+4x+16/(3x+18)=3 | | x-29=2 | | Z=143.2+0.87x | | 3/5*t=9 | | 3y+7x=-13 | | 4(x+3)-3(x-8)=17 | | 42-4y=6 | | -7+8-1=-3a+4a | | (b-2)/3=(3b-11)/4 | | r/4=2 | | 9(x-12)=24 | | 9+4m-8=9m+15-7m | | 5+2a=4a | | 2x+7=9x-8 | | -9+11=8+m | | 7x+3y=-13 | | 4r=12-8 | | 2a+1=(5a-2)/2 | | (4x+16/3x+18) | | 10(1+6v)=12(8v-7)+11v |