book Maths Puzzle Numerical Ability

What is the sum of (14x+15)+(10x+14) ?

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3(4-7)-11 MY QUESTION IS FOR A FRIEND OF MINES DAUGHTER. I AM NOT SURE I HAVE ALL OF THE INFO FOR THE PROBLEM, BUT THIS IS WHAT I HAVE : G+(20+12)=

THAT'S IT SO IF YOU COULD HELP US THAT