ln(7x+21)=ln(7x-28)

Simple and best practice solution for ln(7x+21)=ln(7x-28) equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for ln(7x+21)=ln(7x-28) equation:


Simplifying
ln(7x + 21) = ln(7x + -28)

Reorder the terms:
ln(21 + 7x) = ln(7x + -28)
(21 * ln + 7x * ln) = ln(7x + -28)
(21ln + 7lnx) = ln(7x + -28)

Reorder the terms:
21ln + 7lnx = ln(-28 + 7x)
21ln + 7lnx = (-28 * ln + 7x * ln)
21ln + 7lnx = (-28ln + 7lnx)

Add '-7lnx' to each side of the equation.
21ln + 7lnx + -7lnx = -28ln + 7lnx + -7lnx

Combine like terms: 7lnx + -7lnx = 0
21ln + 0 = -28ln + 7lnx + -7lnx
21ln = -28ln + 7lnx + -7lnx

Combine like terms: 7lnx + -7lnx = 0
21ln = -28ln + 0
21ln = -28ln

Solving
21ln = -28ln

Solving for variable 'l'.

Move all terms containing l to the left, all other terms to the right.

Add '28ln' to each side of the equation.
21ln + 28ln = -28ln + 28ln

Combine like terms: 21ln + 28ln = 49ln
49ln = -28ln + 28ln

Combine like terms: -28ln + 28ln = 0
49ln = 0

Divide each side by '49'.
ln = 0

Simplifying
ln = 0

The solution to this equation could not be determined.

See similar equations:

| 81x^2-51x+12= | | 23-2x=43 | | 1/3b^2+2b+3 | | 5(3h-2)=3(h+8) | | 16x-7=3x-1+5x-2+6x | | 6^8-x=1/216 | | Y^3=3y^2+18y | | 12-4h=-8+11h | | -.33-2.33= | | 3s^2+6s-360=0 | | x/8+3=11 | | 25b^2*9=0 | | y=3/4x-4 | | 2.33-.33= | | z-10z-39=0 | | 5(x+2)=24 | | 8*3-3y=9 | | 3(5-11g)-19g+11=-3+10g-7 | | 8*2-3y=9 | | h^2+5h+8=0 | | 8*1-3y=9 | | (2x+1)(x+5)=1 | | -.625-.125= | | 6x(5-3)=24 | | x^8+15x^4-6=0 | | (2x+1)(x+5)=11 | | d^2+-10d+25= | | -5/8-1/8 | | x+13=13-21 | | a^2+4a+4=13 | | (5a-3)/6=(4-a)/5 | | 2/3h-6=18 |

Equations solver categories