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Simplifying 3(7) + -2(-4) = 0 Multiply 3 * 7 21 + -2(-4) = 0 Multiply -2 * -4 21 + 8 = 0 Combine like terms: 21 + 8 = 29 29 = 0 Solving 29 = 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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