book Maths Puzzle Numerical Ability

PLEASE HELP ME!
Apply distributive property, simplify combining like terms.
2 ( 3a - 5 ) + 2a = ??

My answer that i got was a x 2 but i think its wrong PLEASE HELP!

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book Other Question

im having trouble with this problem could u please help me the question is FIND THREE CONSECUTIVE EVEN INTEGERS SUCH THAT THE SUM OF THE SMALLEST AND THE LARGEST IS 36 if you can help me that would be great thanks!!. (1+b-2b^-1)/(6b^-2+b^-1-1)