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Simplifying -13 = -4(4) + 3 Multiply -4 * 4 -13 = -16 + 3 Combine like terms: -16 + 3 = -13 -13 = -13 Add '13' to each side of the equation. -13 + 13 = -13 + 13 Combine like terms: -13 + 13 = 0 0 = -13 + 13 Combine like terms: -13 + 13 = 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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