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)
ln(7)*x = 6*ln(1/7)+3*ln(7) // - 6*ln(1/7)+3*ln(7)
ln(7)*x-(6*ln(1/7))-(3*ln(7)) = 0
ln(7)*x-6*ln(1/7)-3*ln(7) = 0
ln(7)*x-3*ln(7)-6*ln(1/7) = 0 // + -3*ln(7)-6*ln(1/7)
ln(7)*x = -(-3*ln(7)-6*ln(1/7)) // : ln(7)
x = (-(-3*ln(7)-6*ln(1/7)))/ln(7)
x = -((-3*ln(7)-6*ln(1/7))*(ln(7))^-1)
x = -((-3*ln(7)-6*ln(1/7))*(ln(7))^-1)
| 12X+3(23-5X)=16 | | 5/4+2/3 | | 53-2x=16x+19 | | 2(22+8)= | | (6*a*b^3)^1/2 | | (6*a*b^1/2)^1/2 | | 5+(2x-3)=x-(3+10) | | 3/2x-13=18 | | 2(x-5)=x-4 | | 28+28+(3x-2)=6x | | (22+8)2= | | s^2+12s-15=0 | | 6(p^2-1)=5x | | 65+4x=8x+17 | | 2x+(3-x)=5-(3x-1) | | 36x+4y=20 | | 5x+15y=45 | | s+7=2 | | y=4x^2-13x+10 | | 49+28y+8y^2= | | 3(1-x)-2(x+1)=9(X-1)+3 | | 3lm-2n=7ln+m | | 4x^2/2x^2 | | 49+25y+8y^2= | | 2x+33=11x*57 | | 6u^2+30u=0 | | (5x+4)+(8x-3)=75 | | C=Rx+Rt | | a/8-8=-1 | | 6x-9x=-2x-2 | | 5x^2-22x-15/25-x^2 | | (6b-24/(b+3)(b-7))=0 |