3=lg(x-20)

Solution for 3=lg(x-20) equation:

Simplifying
3 = lg(x + -20)

Reorder the terms:
3 = gl(-20 + x)
3 = (-20 * gl + x * gl)
3 = (-20gl + glx)

Solving
3 = -20gl + glx

Solving for variable 'g'.

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

Add '20gl' to each side of the equation.
3 + 20gl = -20gl + 20gl + glx

Combine like terms: -20gl + 20gl = 0
3 + 20gl = 0 + glx
3 + 20gl = glx

Add '-1glx' to each side of the equation.
3 + 20gl + -1glx = glx + -1glx

Combine like terms: glx + -1glx = 0
3 + 20gl + -1glx = 0

Add '-3' to each side of the equation.
3 + 20gl + -3 + -1glx = 0 + -3

Reorder the terms:
3 + -3 + 20gl + -1glx = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 20gl + -1glx = 0 + -3
20gl + -1glx = 0 + -3

Combine like terms: 0 + -3 = -3
20gl + -1glx = -3

Reorder the terms:
3 + 20gl + -1glx = -3 + 3

Combine like terms: -3 + 3 = 0
3 + 20gl + -1glx = 0

The solution to this equation could not be determined.