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)
-((3/7)*x)-2/63 = 0
(-3/7)*x-2/63 = 0
-3/7*x-2/63 = 0 // + 2/63
-3/7*x = 2/63 // : -3/7
x = 2/63/(-3/7)
x = -2/27
x = -2/27
| (-2/63)-3/7x | | 7e^3x+5=7 | | 7+14n-5=9n+72-5n | | a^3x=91 | | 4.12+-1=x | | 3=25(x-4)+25m | | 64-16x+x^2=0 | | 3=35(x-4)+25m | | 25y-20=8y+2 | | 8y+2=25y-20 | | 3x+2y+12=0 | | y=2/3x+3 | | 10x+(-10)=x+5 | | 1/3(10x-1)=7 | | -3x-11x=70 | | 32.9n=164.5 | | 6+0.1x=0.15+5 | | 2x-3y+2z=25 | | (3x)^3/4 | | x/3+x/4=5/6 | | 6h=51 | | 0.3(x+70)+0.1x=25 | | 6+4x-9-8x= | | x^3-2x^2-19x+20=0 | | 4x+16x=322 | | 2(x+5)=30 | | 28.7+15.8= | | 5y-7=12-3y | | x^2+2x=5x^2+1 | | 21.3+1d=30 | | 1/3(x-15)=2/3 | | mx+2n=p |