log(x+3)=log(4x-21)

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Solution for log(x+3)=log(4x-21) equation:


Simplifying
log(x + 3) = log(4x + -21)

Reorder the terms:
glo(3 + x) = log(4x + -21)
(3 * glo + x * glo) = log(4x + -21)
(3glo + glox) = log(4x + -21)

Reorder the terms:
3glo + glox = glo(-21 + 4x)
3glo + glox = (-21 * glo + 4x * glo)
3glo + glox = (-21glo + 4glox)

Solving
3glo + glox = -21glo + 4glox

Solving for variable 'g'.

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

Add '21glo' to each side of the equation.
3glo + 21glo + glox = -21glo + 21glo + 4glox

Combine like terms: 3glo + 21glo = 24glo
24glo + glox = -21glo + 21glo + 4glox

Combine like terms: -21glo + 21glo = 0
24glo + glox = 0 + 4glox
24glo + glox = 4glox

Add '-4glox' to each side of the equation.
24glo + glox + -4glox = 4glox + -4glox

Combine like terms: glox + -4glox = -3glox
24glo + -3glox = 4glox + -4glox

Combine like terms: 4glox + -4glox = 0
24glo + -3glox = 0

Factor out the Greatest Common Factor (GCF), '3glo'.
3glo(8 + -1x) = 0

Ignore the factor 3.

Subproblem 1

Set the factor 'glo' equal to zero and attempt to solve: Simplifying glo = 0 Solving glo = 0 Move all terms containing g to the left, all other terms to the right. Simplifying glo = 0 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.

Subproblem 2

Set the factor '(8 + -1x)' equal to zero and attempt to solve: Simplifying 8 + -1x = 0 Solving 8 + -1x = 0 Move all terms containing g to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1x = 0 + -8 -1x = 0 + -8 Combine like terms: 0 + -8 = -8 -1x = -8 Add 'x' to each side of the equation. -1x + x = -8 + x Combine like terms: -1x + x = 0 0 = -8 + x Simplifying 0 = -8 + x The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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