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Simplifying 7y + -21 = 4y + -8 Reorder the terms: -21 + 7y = 4y + -8 Reorder the terms: -21 + 7y = -8 + 4y Solving -21 + 7y = -8 + 4y Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-4y' to each side of the equation. -21 + 7y + -4y = -8 + 4y + -4y Combine like terms: 7y + -4y = 3y -21 + 3y = -8 + 4y + -4y Combine like terms: 4y + -4y = 0 -21 + 3y = -8 + 0 -21 + 3y = -8 Add '21' to each side of the equation. -21 + 21 + 3y = -8 + 21 Combine like terms: -21 + 21 = 0 0 + 3y = -8 + 21 3y = -8 + 21 Combine like terms: -8 + 21 = 13 3y = 13 Divide each side by '3'. y = 4.333333333 Simplifying y = 4.333333333
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