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Simplifying 56 + 21x + 28y = 0 Solving 56 + 21x + 28y = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-56' to each side of the equation. 56 + 21x + -56 + 28y = 0 + -56 Reorder the terms: 56 + -56 + 21x + 28y = 0 + -56 Combine like terms: 56 + -56 = 0 0 + 21x + 28y = 0 + -56 21x + 28y = 0 + -56 Combine like terms: 0 + -56 = -56 21x + 28y = -56 Add '-28y' to each side of the equation. 21x + 28y + -28y = -56 + -28y Combine like terms: 28y + -28y = 0 21x + 0 = -56 + -28y 21x = -56 + -28y Divide each side by '21'. x = -2.666666667 + -1.333333333y Simplifying x = -2.666666667 + -1.333333333y
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