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Simplifying 3(15 + 4y) + -12y = -1 (15 * 3 + 4y * 3) + -12y = -1 (45 + 12y) + -12y = -1 Combine like terms: 12y + -12y = 0 45 + 0 = -1 45 = -1 Solving 45 = -1 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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