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Simplifying x(y + 3) + -7(y + 3) = 0 Reorder the terms: x(3 + y) + -7(y + 3) = 0 (3 * x + y * x) + -7(y + 3) = 0 (3x + xy) + -7(y + 3) = 0 Reorder the terms: 3x + xy + -7(3 + y) = 0 3x + xy + (3 * -7 + y * -7) = 0 3x + xy + (-21 + -7y) = 0 Reorder the terms: -21 + 3x + xy + -7y = 0 Solving -21 + 3x + xy + -7y = 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 + 3x + xy + 21 + -7y = 0 + 21 Reorder the terms: -21 + 21 + 3x + xy + -7y = 0 + 21 Combine like terms: -21 + 21 = 0 0 + 3x + xy + -7y = 0 + 21 3x + xy + -7y = 0 + 21 Combine like terms: 0 + 21 = 21 3x + xy + -7y = 21 Add '7y' to each side of the equation. 3x + xy + -7y + 7y = 21 + 7y Combine like terms: -7y + 7y = 0 3x + xy + 0 = 21 + 7y 3x + xy = 21 + 7y Reorder the terms: -21 + 3x + xy + -7y = 21 + 7y + -21 + -7y Reorder the terms: -21 + 3x + xy + -7y = 21 + -21 + 7y + -7y Combine like terms: 21 + -21 = 0 -21 + 3x + xy + -7y = 0 + 7y + -7y -21 + 3x + xy + -7y = 7y + -7y Combine like terms: 7y + -7y = 0 -21 + 3x + xy + -7y = 0 The solution to this equation could not be determined.
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