math

Hosni gave the following argument that -(a+b)=-a+-b for all integers a and b. If the argument is correct, supply the missing reasons. If it is incorrect, explain why. -(a+b)=(-1)(a+b) =(-1)a+(-1)b =-a+-b -(a+b)=(-1)(a+b)=(-1)a+(-1)b=(-a)+(-b)=-a+-b

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