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Simplifying 7(0) + -7(-9) = -6 Multiply 7 * 0 0 + -7(-9) = -6 Anything times zero is zero. 0 + -7(-9) = -6 Multiply -7 * -9 0 + 63 = -6 Combine like terms: 0 + 63 = 63 63 = -6 Solving 63 = -6 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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