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Simplifying (-4.2x + 3)(-7) = 0 Reorder the terms: (3 + -4.2x)(-7) = 0 Reorder the terms for easier multiplication: -7(3 + -4.2x) = 0 (3 * -7 + -4.2x * -7) = 0 (-21 + 29.4x) = 0 Solving -21 + 29.4x = 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 + 21 + 29.4x = 0 + 21 Combine like terms: -21 + 21 = 0 0 + 29.4x = 0 + 21 29.4x = 0 + 21 Combine like terms: 0 + 21 = 21 29.4x = 21 Divide each side by '29.4'. x = 0.7142857143 Simplifying x = 0.7142857143
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