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Simplifying (5x + -3)(7 + -1x) = 0 Reorder the terms: (-3 + 5x)(7 + -1x) = 0 Multiply (-3 + 5x) * (7 + -1x) (-3(7 + -1x) + 5x * (7 + -1x)) = 0 ((7 * -3 + -1x * -3) + 5x * (7 + -1x)) = 0 ((-21 + 3x) + 5x * (7 + -1x)) = 0 (-21 + 3x + (7 * 5x + -1x * 5x)) = 0 (-21 + 3x + (35x + -5x2)) = 0 Combine like terms: 3x + 35x = 38x (-21 + 38x + -5x2) = 0 Solving -21 + 38x + -5x2 = 0 Solving for variable 'x'. Factor a trinomial. (-7 + x)(3 + -5x) = 0Subproblem 1
Set the factor '(-7 + x)' equal to zero and attempt to solve: Simplifying -7 + x = 0 Solving -7 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + x = 0 + 7 x = 0 + 7 Combine like terms: 0 + 7 = 7 x = 7 Simplifying x = 7Subproblem 2
Set the factor '(3 + -5x)' equal to zero and attempt to solve: Simplifying 3 + -5x = 0 Solving 3 + -5x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -5x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -5x = 0 + -3 -5x = 0 + -3 Combine like terms: 0 + -3 = -3 -5x = -3 Divide each side by '-5'. x = 0.6 Simplifying x = 0.6Solution
x = {7, 0.6}
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