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)
(4/7)*(14*x-21)-3 = 8 // - 8
(4/7)*(14*x-21)-8-3 = 0
4/7*(14*x-21)-8-3 = 0
4/7*(14*x-21)-8-3 = 0
8*x-20-3 = 0
8*x-23 = 0
8*x-23 = 0
8*x-23 = 0 // + 23
8*x = 23 // : 8
x = 23/8
x = 23/8
| 12-6(17y+12)=-6(15y-20) | | -3x+40=7x | | 9x^3+7x^2=x^2-x^3 | | 5r+3r+2r-3r-6r=18 | | 10log(x^2+5x)=14 | | 2x^2+42=-200 | | (7t+8)(3t-8)=0 | | -4w+8=2(w-5) | | 19c-19=11-5(-9c-20) | | 13(3)=10x+17.5(3-x) | | 3v+14=56 | | 7k-7k+2k=16 | | 4n^3+7n^2-6n=2n^2 | | P+5=3p-11 | | 3/8(24x-8)=6 | | u/2-13=10 | | -6x-2x+6=9x-12 | | 11.7r+14.86-19.7r=15.49-1.7r | | 12w-9w-w=10 | | 4s^2-121= | | (h+8)(5h-8)=0 | | -22+7c=-6(8c+5) | | B=r(100-x)/100 | | 0.03-20g=4.33-19g | | 7/4×4= | | (5+6i)(-4+7i)= | | 3/4(x-12)=1/4(x-12) | | x^2+8h-52=0 | | 6n-9=-3n-21-6 | | -0.7-12.9k=-16.4k | | A=1/2cd | | -0.7-12.9k=-16.4 |