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Simplifying 7(y + 9) = 7(y + -3) Reorder the terms: 7(9 + y) = 7(y + -3) (9 * 7 + y * 7) = 7(y + -3) (63 + 7y) = 7(y + -3) Reorder the terms: 63 + 7y = 7(-3 + y) 63 + 7y = (-3 * 7 + y * 7) 63 + 7y = (-21 + 7y) Add '-7y' to each side of the equation. 63 + 7y + -7y = -21 + 7y + -7y Combine like terms: 7y + -7y = 0 63 + 0 = -21 + 7y + -7y 63 = -21 + 7y + -7y Combine like terms: 7y + -7y = 0 63 = -21 + 0 63 = -21 Solving 63 = -21 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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