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Simplifying -4(7x + -2) + 4 = -28x + 12 Reorder the terms: -4(-2 + 7x) + 4 = -28x + 12 (-2 * -4 + 7x * -4) + 4 = -28x + 12 (8 + -28x) + 4 = -28x + 12 Reorder the terms: 8 + 4 + -28x = -28x + 12 Combine like terms: 8 + 4 = 12 12 + -28x = -28x + 12 Reorder the terms: 12 + -28x = 12 + -28x Add '-12' to each side of the equation. 12 + -12 + -28x = 12 + -12 + -28x Combine like terms: 12 + -12 = 0 0 + -28x = 12 + -12 + -28x -28x = 12 + -12 + -28x Combine like terms: 12 + -12 = 0 -28x = 0 + -28x -28x = -28x Add '28x' to each side of the equation. -28x + 28x = -28x + 28x Combine like terms: -28x + 28x = 0 0 = -28x + 28x Combine like terms: -28x + 28x = 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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