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Simplifying 39 = 2(7) + -5(-3 * 7 + 16) Multiply 2 * 7 39 = 14 + -5(-3 * 7 + 16) Multiply -3 * 7 39 = 14 + -5(-21 + 16) Combine like terms: -21 + 16 = -5 39 = 14 + -5(-5) Multiply -5 * -5 39 = 14 + 25 Combine like terms: 14 + 25 = 39 39 = 39 Add '-39' to each side of the equation. 39 + -39 = 39 + -39 Combine like terms: 39 + -39 = 0 0 = 39 + -39 Combine like terms: 39 + -39 = 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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