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Simplifying 63(b + -1) + 7 = 7(9b + -8) Reorder the terms: 63(-1 + b) + 7 = 7(9b + -8) (-1 * 63 + b * 63) + 7 = 7(9b + -8) (-63 + 63b) + 7 = 7(9b + -8) Reorder the terms: -63 + 7 + 63b = 7(9b + -8) Combine like terms: -63 + 7 = -56 -56 + 63b = 7(9b + -8) Reorder the terms: -56 + 63b = 7(-8 + 9b) -56 + 63b = (-8 * 7 + 9b * 7) -56 + 63b = (-56 + 63b) Add '56' to each side of the equation. -56 + 56 + 63b = -56 + 56 + 63b Combine like terms: -56 + 56 = 0 0 + 63b = -56 + 56 + 63b 63b = -56 + 56 + 63b Combine like terms: -56 + 56 = 0 63b = 0 + 63b 63b = 63b Add '-63b' to each side of the equation. 63b + -63b = 63b + -63b Combine like terms: 63b + -63b = 0 0 = 63b + -63b Combine like terms: 63b + -63b = 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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