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Simplifying 7b + 18 = 4 + 7(b + 2) Reorder the terms: 18 + 7b = 4 + 7(b + 2) Reorder the terms: 18 + 7b = 4 + 7(2 + b) 18 + 7b = 4 + (2 * 7 + b * 7) 18 + 7b = 4 + (14 + 7b) Combine like terms: 4 + 14 = 18 18 + 7b = 18 + 7b Add '-18' to each side of the equation. 18 + -18 + 7b = 18 + -18 + 7b Combine like terms: 18 + -18 = 0 0 + 7b = 18 + -18 + 7b 7b = 18 + -18 + 7b Combine like terms: 18 + -18 = 0 7b = 0 + 7b 7b = 7b Add '-7b' to each side of the equation. 7b + -7b = 7b + -7b Combine like terms: 7b + -7b = 0 0 = 7b + -7b Combine like terms: 7b + -7b = 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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