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)
31/7 = 4*c-6/7 // - 4*c-6/7
31/7-(4*c)-(-6/7) = 0
31/7-4*c+6/7 = 0
37/7-4*c = 0 // - 37/7
-4*c = -37/7 // : -4
c = -37/7/(-4)
c = 37/28
c = 37/28
| 3(12)-16= | | 4(y-6)=28 | | 3(-12)-16= | | 1/4n+5/4=121/2 | | 3(11/3)-16= | | x^2+23x+130=208 | | 6(y-5)=12 | | 179-3x=33x+15 | | 14.6+m=-18 | | 3(y+6)=39 | | x^2-20=1x | | 3.5x=11x | | -1/2*32*50^2+1000*50+50 | | 3(y-6)=3 | | 3.5x+11=180 | | x^2-20+1x= | | 3(9)-6= | | 2x+7=101-10x | | 3(5)-6= | | 11x-1=9x-5 | | 3(-9)-6= | | 5(y+6)=70 | | x^2+26x+168=255 | | x^2+26x+168=255 | | (0.1-2x)(0.1-2x)=0 | | 30x+20=60 | | -69=15c | | 3x^2+12x-60=0 | | (1/5)(6x+6)=4x | | 50*0.08=x | | 3(y-7)=6 | | (-1-(-3))/(-2-6) |