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Simplifying 3 + -7x + 3y = 42 Solving 3 + -7x + 3y = 42 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -7x + -3 + 3y = 42 + -3 Reorder the terms: 3 + -3 + -7x + 3y = 42 + -3 Combine like terms: 3 + -3 = 0 0 + -7x + 3y = 42 + -3 -7x + 3y = 42 + -3 Combine like terms: 42 + -3 = 39 -7x + 3y = 39 Add '-3y' to each side of the equation. -7x + 3y + -3y = 39 + -3y Combine like terms: 3y + -3y = 0 -7x + 0 = 39 + -3y -7x = 39 + -3y Divide each side by '-7'. x = -5.571428571 + 0.4285714286y Simplifying x = -5.571428571 + 0.4285714286y
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