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Simplifying -7(7x + -3) + 2 = -49x + 23 Reorder the terms: -7(-3 + 7x) + 2 = -49x + 23 (-3 * -7 + 7x * -7) + 2 = -49x + 23 (21 + -49x) + 2 = -49x + 23 Reorder the terms: 21 + 2 + -49x = -49x + 23 Combine like terms: 21 + 2 = 23 23 + -49x = -49x + 23 Reorder the terms: 23 + -49x = 23 + -49x Add '-23' to each side of the equation. 23 + -23 + -49x = 23 + -23 + -49x Combine like terms: 23 + -23 = 0 0 + -49x = 23 + -23 + -49x -49x = 23 + -23 + -49x Combine like terms: 23 + -23 = 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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