Write an algebraic expression marlis brothers is x years older than her marli is 12? Plz I need helppp

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

b. x- 48 =120

step-by-step explanation: