21 is the answer you are looking for.
Step-by-step explanation:
First, plug in the numbers for the variables:
[tex]20-5(-3) + 2(8)[/tex]
Then use order of operations to solve, begin with parenthesis:
[tex]20-15+16[/tex]
Subtract:
[tex]5 +16[/tex]
Add:
[tex]5+16=21[/tex]
So,
[tex]20-5y+2x=21[/tex]
The correct answer is 21
