evaluate -4(a+b)-10a/b when a=8 and b=5

Question

mathteacher1729 · Answer

How far have you gotten on this problem?

anonymous · Answer

i just plugged the numbers in im confused on what to do

mathteacher1729 · Answer

Do you remember the order of operations? 

Parenthesis 
Exponents
Multiplication & Division
Addition & Subtraction 
(in that order, from left to right)

$$-4(8 + 5) - \frac{10(8)}{5}$$

saifoo.khan · Answer

$$\checkmark$$

anonymous · Answer

ohh imma try it n if i get the answer i will let you know

mathteacher1729 · Answer

Sure!  Post the work you did so that if you made any errors, we can point them out. :)

anonymous · Answer

ok i got -52-16= -68

mathteacher1729 · Answer

Yup, that's correct! :D

anonymous · Answer

so none of these are the answers 625/8  -53 -15

mathteacher1729 · Answer

Are you sure you copied the problem correctly? In other words, what is the numerator and denominator of that fraction?

anonymous · Answer

i copied it exactly

mathteacher1729 · Answer

Are you sure it's not this: $$\frac{-4(a+b)-10a}{b}$$

anonymous · Answer

no

mathteacher1729 · Answer

$$-4(8 + 5) - \frac{10(8)}{5}$$ 
$$=-4(13) - \frac{2(8)}{1}$$
$$=-52 - 16$$
$$= \fbox{$-68$}$$

anonymous · Answer

yes thats wat i did

anonymous · Answer

even if its written the way i wrote it?

anonymous · Answer

one more question about this one?