Respuesta :
Answer:
30
Step-by-step explanation:
Evaluating an expression when given a value of an unknown means to substitute the unknown value with a certain value given and simplify fully:
27 + (3)
Simplify by doing simple addition :
27 + 3 = 30
Therefore our answer is 30.
Hope this helped and brainliest please.
Replace the variable x with 3 in the expression.
27 + 3
Remove parentheses.
27 + 3
Add 27 and 3.
30