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Simplifying 3x + 4 + -7x = 7 + -1(4x + 3) Reorder the terms: 4 + 3x + -7x = 7 + -1(4x + 3) Combine like terms: 3x + -7x = -4x 4 + -4x = 7 + -1(4x + 3) Reorder the terms: 4 + -4x = 7 + -1(3 + 4x) 4 + -4x = 7 + (3 * -1 + 4x * -1) 4 + -4x = 7 + (-3 + -4x) Combine like terms: 7 + -3 = 4 4 + -4x = 4 + -4x Add '-4' to each side of the equation. 4 + -4 + -4x = 4 + -4 + -4x Combine like terms: 4 + -4 = 0 0 + -4x = 4 + -4 + -4x -4x = 4 + -4 + -4x Combine like terms: 4 + -4 = 0 -4x = 0 + -4x -4x = -4x Add '4x' to each side of the equation. -4x + 4x = -4x + 4x Combine like terms: -4x + 4x = 0 0 = -4x + 4x Combine like terms: -4x + 4x = 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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