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Solve for x: 3 over 3 x plus 1 over quantity x plus 4 equals 10 over 7x .

Donald Ward

in Mathematics

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Ashley Howard on May 21, 2018

3 1 10------ + --------------- = ---------- 3x x +4 7x 1 1 10 ------ + ------------ = ---------- x x +4 7x x + 4 + x 10 ------------------ = ---------- x(x +4) 7x 2x + 4 10 ------------------ = ---------- x(x +4) 7x 7x(2x + 4) = 10 x(x+4) 14x^2 + 28x = 10x^2 + 40x 4x^2 - 12x = 0 4x(x - 3) = 0 4x = 0 x = 0 or x - 3 = 0 x = - 3answer x = 0 and x = 3


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