First pireson to get it right gets 10 points! it is 7th grade math?

JessMartin

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it is 7th grade math and i dont understand it (it is my home work) so i need alittle help.
here is the problem:

Simplfye the problem: -4r+2r+5

a) 2r+8
b)7x-3
c)6x+8
d)12x+8
 
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