1 Answer

Sandra Rossi · Answer 1 · 2018-09-18T08:38:30+0000

(a + b + c)/3 = A

(a + b + c)/3 x 3 = A x 3

a + b + c = A(3)

a- a + b + c - c = A(3) - a - c

b = A(3) - a - c

hope this helps

( i dont know if the A is suppose to be there or not sorry)

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