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Simplifying (3x + -2y)(5x + -7y) = 0 Multiply (3x + -2y) * (5x + -7y) (3x * (5x + -7y) + -2y * (5x + -7y)) = 0 ((5x * 3x + -7y * 3x) + -2y * (5x + -7y)) = 0 Reorder the terms: ((-21xy + 15x2) + -2y * (5x + -7y)) = 0 ((-21xy + 15x2) + -2y * (5x + -7y)) = 0 (-21xy + 15x2 + (5x * -2y + -7y * -2y)) = 0 (-21xy + 15x2 + (-10xy + 14y2)) = 0 Reorder the terms: (-21xy + -10xy + 15x2 + 14y2) = 0 Combine like terms: -21xy + -10xy = -31xy (-31xy + 15x2 + 14y2) = 0 Solving -31xy + 15x2 + 14y2 = 0 Solving for variable 'x'. Factor a trinomial. (5x + -7y)(3x + -2y) = 0Subproblem 1
Set the factor '(5x + -7y)' equal to zero and attempt to solve: Simplifying 5x + -7y = 0 Solving 5x + -7y = 0 Move all terms containing x to the left, all other terms to the right. Add '7y' to each side of the equation. 5x + -7y + 7y = 0 + 7y Combine like terms: -7y + 7y = 0 5x + 0 = 0 + 7y 5x = 0 + 7y Remove the zero: 5x = 7y Divide each side by '5'. x = 1.4y Simplifying x = 1.4ySubproblem 2
Set the factor '(3x + -2y)' equal to zero and attempt to solve: Simplifying 3x + -2y = 0 Solving 3x + -2y = 0 Move all terms containing x to the left, all other terms to the right. Add '2y' to each side of the equation. 3x + -2y + 2y = 0 + 2y Combine like terms: -2y + 2y = 0 3x + 0 = 0 + 2y 3x = 0 + 2y Remove the zero: 3x = 2y Divide each side by '3'. x = 0.6666666667y Simplifying x = 0.6666666667ySolution
x = {1.4y, 0.6666666667y}
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