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Simplifying 15x + 21y + 39 = 0 Reorder the terms: 39 + 15x + 21y = 0 Solving 39 + 15x + 21y = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-39' to each side of the equation. 39 + 15x + -39 + 21y = 0 + -39 Reorder the terms: 39 + -39 + 15x + 21y = 0 + -39 Combine like terms: 39 + -39 = 0 0 + 15x + 21y = 0 + -39 15x + 21y = 0 + -39 Combine like terms: 0 + -39 = -39 15x + 21y = -39 Add '-21y' to each side of the equation. 15x + 21y + -21y = -39 + -21y Combine like terms: 21y + -21y = 0 15x + 0 = -39 + -21y 15x = -39 + -21y Divide each side by '15'. x = -2.6 + -1.4y Simplifying x = -2.6 + -1.4y
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