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can someone please help me, i really have no idea how to do this. roses cost 15$ per dozen, carnations cost 8$ per dozen and sara bought a total of 17 dozen flowers and paid a total of 192$. how many roses did she buy?

Mathematics
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roses, r carnations, c r+c=17 15r+8c=192 c=17-r 15r+8(17-r)=192 solve for r
thank you so much !!!!!
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how do i do that, i just signed up im new.,
just click the become a fan right next to my name

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