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If a + 2B / 2a-b = 9 / 5, then a: B=____ X-1 / X (x-1) = 1 / X if__ If 1 / X-1 / y = 2, then 3x = 5xy-3y / x-xy-y=____
A + 2B / 2a-b = 9 / 5, then 5 (a + 2b) = 9 (2a-b), then 5A + 10B = 18a-9b, then 13A = 19b, so a: B = 19:132. X-1 / X (x-1) = 1 / X holds if x ≠ 13.1 / X-1 / y = 2, then Y / (XY) - X / (XY) = 2, then (Y-X) / (XY) = 2, so Y-X = 2XY, so X-Y = - 2XY 3x + 5xy-3y / x-xy-y = 5x
RELATED INFORMATIONS
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