If rs=23-2x,st=9x-5,and rt=39 what is rs
1 answer:
Answer:
rs=17
Step-by-step 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
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Step-by-step explanation:
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