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)
(9*x)/8+4/21 = -1/8 // + -1/8
(9*x)/8+4/21-(-1/8) = 0
(9*x)/8+4/21+1/8 = 0
9/8*x+53/168 = 0 // - 53/168
9/8*x = -53/168 // : 9/8
x = -53/168/9/8
x = -53/189
x = -53/189
| 64r^2=1 | | 15-6x=21 | | 5x+7=3y-5 | | x/8+3+3 | | 7x=19x+36 | | 2X^2+33X+45=0 | | -6x-3=-2x+9 | | 9x^2+243=0 | | 10x-29=5x+16 | | P(x)=-0.002x^2+1.6x-300 | | 5y+16=10y+29 | | -40-3x=9x-10x | | -10(3)-3y=-18 | | 12x-17/x-1=10x-10/x-1 | | -10(-7)-3y=-18 | | -10(-4)-3y=-18 | | -10(2)-3y=-18 | | 135=x-221 | | 20x-10y=55x+11y | | 6x+4=4x+28 | | -6x-3=2x+9 | | T=f/4(a+p) | | 7x+5-2=10x | | (w^2-w-2)/(6w^2-6) | | 6x-5=8y-5-2x | | 0.3*16+0.3*16+0.4*x=14 | | 0.3*16+0.3*16+0.4*x=16 | | 8*0-7y=56 | | a/8-8=312-4a+20 | | 8x-6=46 | | 10x=20y | | 8x-7*0=56 |