(5x-1)(x+3)=(x-5)(5x+1)+40
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(5x - 1)(x + 3) = (x - 5)(5x + 1) + 40
5x² + 15x - x - 3 = 5x² + x - 25x - 5 + 40
14x - 3 = - 24x + 35
14x + 24x = 35 + 3
38x = 38
x = 38 ÷ 38
x = 1
Answer: x = 1
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