Can you gain muscle mass efficiently and burn fat efficiently at the same time?

CAN_I_HAS_BA
I am trying to get my abs to show again and add some muscle mass but is it good to do it at the same time? My died consist only of pizza and lasagna ;( but I run 12 kilometers with sprints every other day, what do you think?
Can you gain muscle mass efficiently and burn fat efficiently at the same time?
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