If it's not what You are looking for type in the equation solver your own equation and let us solve it.
z in (-oo:+oo)
-9*z-(3*z) = 6/7 // - 6/7
-9*z-(3*z)-(6/7) = 0
-9*z-3*z-6/7 = 0
-12*z-6/7 = 0 // + 6/7
-12*z = 6/7 // : -12
z = 6/7/(-12)
z = -1/14
z = -1/14
| 4+7s=3s | | (9x+2)=(5x-1)+23 | | 10x-2*5x+4=4 | | -21/25= | | -2.4-6.4= | | 2b-3=b-9 | | 6x+9.67=3x+13 | | 2u+6=u | | y-3.1=5 | | 6-6w=-5w | | 33.6/10= | | 5x-4+2x+8= | | (-2*5+10)-(-6*5+5*4+12)+(5+8*4-16)= | | x+1.9=8.8 | | 8=(-2)tan(3) | | 4.84(0.4+0.6)= | | 13+11x=90 | | 30=b/2 | | f(x)=4+ln(x-3) | | 3y-13=-8+8y | | Sin^2(x/2) | | -2+m=1 | | 5n+20-n= | | Sin^2(x/2)-sin^2(x) | | 8m-23=19+m | | 2N+17=7n | | 8m-23=18+m | | 2(x+10)-17=5+2x-2 | | -9y=2.97 | | Y-4=3/4(x-5) | | -0.75(x+7)=36 | | 10x^2+5=105 |