I'm grade 6 I don't know ................
Its C.
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Answer: 
Step-by-step explanation:
You can reduce the fractions, then:



Rewrite them as following:

If you subtract the first number and the second number, you obtain:

If you subtract the second number and the second number, you obtain:

Therefore, you must subtract
and
to obtain the number asked. Then, this is:

Answer:
x and y axes
Step-by-step explanation:
you have to graph them on either the x axes or y axes :))