Question

Dada a P.A. ( x+5), (x-2), (3-2x). Calcule o valor de x

Answer 1

a3-a2=a2-a1
(3-2x)-(x-2)=(x-2)-(x+5)
3-2x-x+2=x-2-x-5
-2x-x-x+x=-2-5-2-3
-4x+x=-12
-3x=-12.(-1)
3x=12
x=12/3
x=4