Question

(18)a +(-a ) =(-a) + a = ______

(19)a x (b + c) = ___________

(20) 16 ÷ 16 =_____

(21)(-8) ÷ 8 =_____

(22)(-5)x(-8)x(-3) =_____

(23)(-6)x6x(-10)=_____

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Answer 1

Step-by-step explanation:

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Answer 2

Answer:

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