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secondary 2 | Maths
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11 - (⅚)x = -(²⁄₉)x
(⅚) ∙ x - (²⁄₉) ∙ x = 11
LCM( 6 , 9 ) → 18
times 18 at both side
(3×5 - 2×2)•x = 18×11
x = (18×11)÷(3×5 - 2×2) = 18
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