The question asks to evaluate:
[tex]5\: +\: 2\: \times8\: -\: 20\: \div\: 4[/tex]Following the PEMDAS order of operations, we can solve using the following steps.
STEP 1: Multiply the terms 2 and 8
[tex]\Rightarrow5+16-20\div4[/tex]STEP 2: Divide the terms -20 and 4
[tex]\Rightarrow5+16-5[/tex]STEP 3: Add and subtract from left to right
[tex]\Rightarrow16[/tex]ANSWER
[tex]5\: +\: 2\: \times8\: -\: 20\: \div\: 4=16[/tex]