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)
(2/7)*(c-9) = -4 // + 4
(2/7)*(c-9)+4 = 0
2/7*(c-9)+4 = 0
2/7*(c-9)+4 = 0
2/7*c+10/7 = 0
2/7*c+10/7 = 0
2/7*c+10/7 = 0 // - 10/7
2/7*c = -10/7 // : 2/7
c = -10/7/2/7
c = -5
c = -5
| 7p+6+3p= | | -3m=39 | | 4y+2=-2 | | 15x^2+138+27= | | 0.6666666666666a+2=0.333333333333333333(4a+1) | | 10-(4z-2)=5-5z | | -101-8x+13x=39 | | 3-7(x-1)=7-6(6+1) | | -6(7+D)=-42 | | -101-8x+13x=29 | | 3.5(c-8)+c= | | 25/450 | | 16-7+4t=12t-1 | | 1.4[0.7k+2]=2.1 | | 2x+6=5x-13 | | x+5.1=-7.2 | | 4x^4(7x+8y)= | | 3/4*ln(8-3) | | a+0.8=1.2 | | 15.7+m=-19.6 | | 2x-4y+72=24 | | 6m^2=13m | | 2.4[k-1.3]=15.12 | | 3x+14=47 | | 2m+6=5m-8 | | f(-x)=4x^4-3x^2-29 | | y^2+-7y+-18=0 | | 2d+5=2d+2 | | 35=8x+19 | | 49=13-6w | | x+191=490 | | p(-1)=5x^7-4x^2+11x+17 |