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Simplifying 7(4x + -7) + -5 = 28x + -54 Reorder the terms: 7(-7 + 4x) + -5 = 28x + -54 (-7 * 7 + 4x * 7) + -5 = 28x + -54 (-49 + 28x) + -5 = 28x + -54 Reorder the terms: -49 + -5 + 28x = 28x + -54 Combine like terms: -49 + -5 = -54 -54 + 28x = 28x + -54 Reorder the terms: -54 + 28x = -54 + 28x Add '54' to each side of the equation. -54 + 54 + 28x = -54 + 54 + 28x Combine like terms: -54 + 54 = 0 0 + 28x = -54 + 54 + 28x 28x = -54 + 54 + 28x Combine like terms: -54 + 54 = 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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