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Simplifying -7(6x + -5) + 4 = -42x + 39 Reorder the terms: -7(-5 + 6x) + 4 = -42x + 39 (-5 * -7 + 6x * -7) + 4 = -42x + 39 (35 + -42x) + 4 = -42x + 39 Reorder the terms: 35 + 4 + -42x = -42x + 39 Combine like terms: 35 + 4 = 39 39 + -42x = -42x + 39 Reorder the terms: 39 + -42x = 39 + -42x Add '-39' to each side of the equation. 39 + -39 + -42x = 39 + -39 + -42x Combine like terms: 39 + -39 = 0 0 + -42x = 39 + -39 + -42x -42x = 39 + -39 + -42x Combine like terms: 39 + -39 = 0 -42x = 0 + -42x -42x = -42x Add '42x' to each side of the equation. -42x + 42x = -42x + 42x Combine like terms: -42x + 42x = 0 0 = -42x + 42x Combine like terms: -42x + 42x = 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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