Answer:
12+x
Step-by-step explanation:
This is marli- []
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Marli is 12
but lets say that Marli's brother is 5 yrs older than her just for fun
To find marli's bro's age when her bro is 5 yrs older than her, we would add 5 and 12 right?
the same thing applies when there's a variable in place of a number
DO NOT GET CONFUSED, DO EXACTLY THE SAME THING IF THERE HAD BEEN A NUMBER INSTEAD OF A VARIABLE
so
marli's bro= 12+x
Hope This Helps!!!!!