Question

Use the definition of subtraction to rewrite the following expressions as addition a) 5-6 b) -4(-8) c) -x-(y)

Answer 1

@freckles

Answer 2

@phi

Answer 3

b)would be +

Answer 4

I usually think of subtraction as adding the negative of a number
so 8 - 5 is really 8+ -5

Answer 5

I am not sure what b) is
it looks like you are multiplying -4* -8
but the question says "rewrite as addition" ?

Answer 6

_4+-8

Answer 7

do you mean -4 - (-8)

Answer 8

yes thats the problem

Answer 9

so it would be -4 + -8 right?

Answer 10

c) -x+(-y)?

Answer 11

-4 - (-8)
two minuses make a plus. when you see - -x or -(- x), you get +x

Answer 12

but you have posted two different versions : _4+-8
which I assume you mean -4+-8
if that is the problem , then that is the answer: -4 + -8
if it's -4 - -8 then it's -4 + 8

Answer 13

yes c is correct
you can also write is -x + -y
without the parens

Answer 14

the question is -4-(-8) i posted the others asking if thats the answer sorry

Answer 15

i got it thanks