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Simplifying 687 = 30x + 7y Solving 687 = 30x + 7y Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-30x' to each side of the equation. 687 + -30x = 30x + -30x + 7y Combine like terms: 30x + -30x = 0 687 + -30x = 0 + 7y 687 + -30x = 7y Add '-687' to each side of the equation. 687 + -687 + -30x = -687 + 7y Combine like terms: 687 + -687 = 0 0 + -30x = -687 + 7y -30x = -687 + 7y Divide each side by '-30'. x = 22.9 + -0.2333333333y Simplifying x = 22.9 + -0.2333333333y
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