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Simplifying 90 = 64.5 + 2y Solving 90 = 64.5 + 2y Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-2y' to each side of the equation. 90 + -2y = 64.5 + 2y + -2y Combine like terms: 2y + -2y = 0 90 + -2y = 64.5 + 0 90 + -2y = 64.5 Add '-90' to each side of the equation. 90 + -90 + -2y = 64.5 + -90 Combine like terms: 90 + -90 = 0 0 + -2y = 64.5 + -90 -2y = 64.5 + -90 Combine like terms: 64.5 + -90 = -25.5 -2y = -25.5 Divide each side by '-2'. y = 12.75 Simplifying y = 12.75
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