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Simplifying 7 + -9[7 + -1(7y + -4)] = 0 Reorder the terms: 7 + -9[7 + -1(-4 + 7y)] = 0 7 + -9[7 + (-4 * -1 + 7y * -1)] = 0 7 + -9[7 + (4 + -7y)] = 0 Combine like terms: 7 + 4 = 11 7 + -9[11 + -7y] = 0 7 + [11 * -9 + -7y * -9] = 0 7 + [-99 + 63y] = 0 Combine like terms: 7 + -99 = -92 -92 + 63y = 0 Solving -92 + 63y = 0 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '92' to each side of the equation. -92 + 92 + 63y = 0 + 92 Combine like terms: -92 + 92 = 0 0 + 63y = 0 + 92 63y = 0 + 92 Combine like terms: 0 + 92 = 92 63y = 92 Divide each side by '63'. y = 1.46031746 Simplifying y = 1.46031746
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