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Simplifying (42x + 63y) + (39x + -13y) = 0 Remove parenthesis around (42x + 63y) 42x + 63y + (39x + -13y) = 0 Remove parenthesis around (39x + -13y) 42x + 63y + 39x + -13y = 0 Reorder the terms: 42x + 39x + 63y + -13y = 0 Combine like terms: 42x + 39x = 81x 81x + 63y + -13y = 0 Combine like terms: 63y + -13y = 50y 81x + 50y = 0 Solving 81x + 50y = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-50y' to each side of the equation. 81x + 50y + -50y = 0 + -50y Combine like terms: 50y + -50y = 0 81x + 0 = 0 + -50y 81x = 0 + -50y Remove the zero: 81x = -50y Divide each side by '81'. x = -0.6172839506y Simplifying x = -0.6172839506y
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