If rs=23-2x,st=9x-5,and rt=39 what is rs

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Karthikeyan KR asked Nov 2, 2022

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If rs=23-2x,st=9x-5,and rt=39 what is rs

Mathematics
high-school

Karthikeyan KR asked Nov 2, 2022

by Karthikeyan KR

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13 votes

Answer:

rs=17

Explanation:

rs+st=rt

23-2x+9x-5=39

simplify

7x+18=39

solve for x

7x=21

7x/7=21/7

x=3

substitute x into ther rs equation

rs=23-2(3)

rs=17

Rijvi Rajib answered Nov 7, 2022

by Rijvi Rajib

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