Respuesta :
Answer:
7x+17
Step-by-step explanation:
(3x-5) +(4x+12)
I like to line them up vertically
(3x-5)
+(4x+12)
----------------
7x+17
PEMDAS
parenthesis
exponents
multiplication and division (whichever comes first)
addiction and subtraction (whichever comes first)
parenthesis
exponents
multiplication and division (whichever comes first)
addiction and subtraction (whichever comes first)