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