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Simplifying -7(7x + -7) + 4 = -49x + 53 Reorder the terms: -7(-7 + 7x) + 4 = -49x + 53 (-7 * -7 + 7x * -7) + 4 = -49x + 53 (49 + -49x) + 4 = -49x + 53 Reorder the terms: 49 + 4 + -49x = -49x + 53 Combine like terms: 49 + 4 = 53 53 + -49x = -49x + 53 Reorder the terms: 53 + -49x = 53 + -49x Add '-53' to each side of the equation. 53 + -53 + -49x = 53 + -53 + -49x Combine like terms: 53 + -53 = 0 0 + -49x = 53 + -53 + -49x -49x = 53 + -53 + -49x Combine like terms: 53 + -53 = 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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