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Simplifying 42x + -49y + -21 = 0 Reorder the terms: -21 + 42x + -49y = 0 Solving -21 + 42x + -49y = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '21' to each side of the equation. -21 + 42x + 21 + -49y = 0 + 21 Reorder the terms: -21 + 21 + 42x + -49y = 0 + 21 Combine like terms: -21 + 21 = 0 0 + 42x + -49y = 0 + 21 42x + -49y = 0 + 21 Combine like terms: 0 + 21 = 21 42x + -49y = 21 Add '49y' to each side of the equation. 42x + -49y + 49y = 21 + 49y Combine like terms: -49y + 49y = 0 42x + 0 = 21 + 49y 42x = 21 + 49y Divide each side by '42'. x = 0.5 + 1.166666667y Simplifying x = 0.5 + 1.166666667y
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