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Simplifying -20 + -1(-13) + (-8) + -6 = 0 Multiply -1 * -13 -20 + 13 + (-8) + -6 = 0 -20 + 13 + -8 + -6 = 0 Combine like terms: -20 + 13 = -7 -7 + -8 + -6 = 0 Combine like terms: -7 + -8 = -15 -15 + -6 = 0 Combine like terms: -15 + -6 = -21 -21 = 0 Solving -21 = 0 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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