Question

let a , _ 10 , b = 7 and c = 12 show that a+ b = b+ a
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Answer 1

Answer:

a + b = b + a = 3

Step-by-step explanation:

this is because it is associative property

Answer 2

Step-by-step explanation:

-10+7=7-10=-3 then proved

if it is wrong then your question was wrong.