the angles of a Pentagon are x°,2x°(x+30)°,(x+40)°,find x

Answer 1

That's only 4 angles.

You know they add up to 540°, so figure out the 5th angle, and add 'em up, solve for x.

Answer 2

x+x+x+x+x+x
-10+10=0
ans=6x+30

Answer 3

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