2x+y=0
y=-4
(x is 2 y is -4)
For how many books he got : 4
This is but adding up 3 of $3.95 to get the total of $11.85
You then want to subtract that from $47.65 to get $34.80
You subtract that by the $8.95 4 times so you see he bought 4 books
After you talk about how many books did he buy after that sentence I’m not sure what your saying
-5 and -4 is -9 that’s correct
Missing information. Try reposting.
you do 0.047×40 and what ever that gives you you add it to 40 and it will give you the answer
