If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
12*x-(8*(-5/7)) = 4 // - 4
12*x-(8*(-5/7))-4 = 0
12*x+40/7-4 = 0
12*x+12/7 = 0 // - 12/7
12*x = -12/7 // : 12
x = -12/7/12
x = -1/7
x = -1/7
| X/5-2y=10 | | 2m-12-4m-3=-3m-3 | | 3x-4x-5x=11-12+13 | | 33w+90=3w | | V^2-10v=-24 | | S^2=40-3a | | 40x^2+84x-40=0 | | 2*x*y+2*x*z+2*y*z=9 | | 8x+38=9x+47 | | 8x+19=9x+47 | | 5x+19=9x+47 | | 3/8k=3 | | 23x=148y | | 2u+6-3(-7u-1)=5(u-1) | | log(3x+5)+3=log(2x+1) | | 2(0)+y=11 | | logx=1-log(x-9) | | 148x=23y | | 5(3h+6)=4(2h+11) | | 6(w+1)+w=3 | | y/4=3/17 | | -1(6x-27)=-4 | | X-4/3=2 | | 6=2x-y | | 14-x=11 | | -3.2(6x-27)=4 | | 2x-9y=15findx | | 12a^2b+15ab^2= | | 4(3d-5)=7d+14 | | 6x+1=12-5x+11 | | 9n=55+-2n | | 12x-54+18x+120+3x-42+10x-14=2160 |