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Simplifying 21x + 28y + -35z = 0 Solving 21x + 28y + -35z = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-28y' to each side of the equation. 21x + 28y + -28y + -35z = 0 + -28y Combine like terms: 28y + -28y = 0 21x + 0 + -35z = 0 + -28y 21x + -35z = 0 + -28y Remove the zero: 21x + -35z = -28y Add '35z' to each side of the equation. 21x + -35z + 35z = -28y + 35z Combine like terms: -35z + 35z = 0 21x + 0 = -28y + 35z 21x = -28y + 35z Divide each side by '21'. x = -1.333333333y + 1.666666667z Simplifying x = -1.333333333y + 1.666666667z
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