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Simplifying -7(7x + -9) = -49x + -63 Reorder the terms: -7(-9 + 7x) = -49x + -63 (-9 * -7 + 7x * -7) = -49x + -63 (63 + -49x) = -49x + -63 Reorder the terms: 63 + -49x = -63 + -49x Add '49x' to each side of the equation. 63 + -49x + 49x = -63 + -49x + 49x Combine like terms: -49x + 49x = 0 63 + 0 = -63 + -49x + 49x 63 = -63 + -49x + 49x Combine like terms: -49x + 49x = 0 63 = -63 + 0 63 = -63 Solving 63 = -63 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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