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Simplifying 6a(7 * 3b) = (6a * 7) * 3b Multiply 7 * 3 6a(21b) = (6a * 7) * 3b Remove parenthesis around (21b) 6a * 21b = (6a * 7) * 3b Reorder the terms for easier multiplication: 6 * 21a * b = (6a * 7) * 3b Multiply 6 * 21 126a * b = (6a * 7) * 3b Multiply a * b 126ab = (6a * 7) * 3b Reorder the terms for easier multiplication: 126ab = (6 * 7a) * 3b Multiply 6 * 7 126ab = (42a) * 3b Remove parenthesis around (42a) 126ab = 42a * 3b Reorder the terms for easier multiplication: 126ab = 42 * 3a * b Multiply 42 * 3 126ab = 126a * b Multiply a * b 126ab = 126ab Add '-126ab' to each side of the equation. 126ab + -126ab = 126ab + -126ab Combine like terms: 126ab + -126ab = 0 0 = 126ab + -126ab Combine like terms: 126ab + -126ab = 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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