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Simplifying 7(2x + -7) + -7 = 14x + -56 Reorder the terms: 7(-7 + 2x) + -7 = 14x + -56 (-7 * 7 + 2x * 7) + -7 = 14x + -56 (-49 + 14x) + -7 = 14x + -56 Reorder the terms: -49 + -7 + 14x = 14x + -56 Combine like terms: -49 + -7 = -56 -56 + 14x = 14x + -56 Reorder the terms: -56 + 14x = -56 + 14x Add '56' to each side of the equation. -56 + 56 + 14x = -56 + 56 + 14x Combine like terms: -56 + 56 = 0 0 + 14x = -56 + 56 + 14x 14x = -56 + 56 + 14x Combine like terms: -56 + 56 = 0 14x = 0 + 14x 14x = 14x Add '-14x' to each side of the equation. 14x + -14x = 14x + -14x Combine like terms: 14x + -14x = 0 0 = 14x + -14x Combine like terms: 14x + -14x = 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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