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Simplifying 7y + 14z = 21 Solving 7y + 14z = 21 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-14z' to each side of the equation. 7y + 14z + -14z = 21 + -14z Combine like terms: 14z + -14z = 0 7y + 0 = 21 + -14z 7y = 21 + -14z Divide each side by '7'. y = 3 + -2z Simplifying y = 3 + -2z
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