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Simplifying 2(260 + -2y) + 4y = 520 (260 * 2 + -2y * 2) + 4y = 520 (520 + -4y) + 4y = 520 Combine like terms: -4y + 4y = 0 520 + 0 = 520 520 = 520 Add '-520' to each side of the equation. 520 + -520 = 520 + -520 Combine like terms: 520 + -520 = 0 0 = 520 + -520 Combine like terms: 520 + -520 = 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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