Respuesta :

Answer:

IT is 41.5 heres the steps

Step-by-step explanation:

first step 21 divided by 2 = 10.5

Then you do 10.5 + 1 = 11.5  

then you do 11.5 times 5 =  57.5

Then 2 times 2 times 2 times 2= 16

then 16 - 57.5 = 41.5 is your answer
You should start by putting parentheses around (21÷2) +1(5) - 2⁴