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Simplifying log(x + 7) = log(x) + log(7) Reorder the terms: glo(7 + x) = log(x) + log(7) (7 * glo + x * glo) = log(x) + log(7) (7glo + glox) = log(x) + log(7) Multiply glo * x 7glo + glox = glox + log(7) Reorder the terms for easier multiplication: 7glo + glox = glox + 7glo Reorder the terms: 7glo + glox = 7glo + glox Add '-7glo' to each side of the equation. 7glo + -7glo + glox = 7glo + -7glo + glox Combine like terms: 7glo + -7glo = 0 0 + glox = 7glo + -7glo + glox glox = 7glo + -7glo + glox Combine like terms: 7glo + -7glo = 0 glox = 0 + glox glox = glox Add '-1glox' to each side of the equation. glox + -1glox = glox + -1glox Combine like terms: glox + -1glox = 0 0 = glox + -1glox Combine like terms: glox + -1glox = 0 0 = 0 Solving 0 = 0 Couldn't find a variable to solve for. This equation is an identity, all real numbers are solutions.
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