Factorise the grouping11x-6+55ax-30a
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11x + 55ax - 6 - 30a = 0
11x ( 1 + 5a) - 6 ( 1 + 5a ) = 0
(11x - 6) (1 + 5a) = 0
11x - 6 = 0 and 1 + 5a = 0
11x = 6 and 5a = - 1
x = 6/11 and a = - 1/5
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