2 because every number in maths is 1 so its 2
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Associative: (a + b) + c = a + (b + c) (a x b) x c = a x (b x c)
Distributive: a x (b + c) = (a x b) + (a x c)
X= (b-c)/a
7.5
factor b(x+2) + c(x+2) (b+c)(x+2) need more info for futher analysis.