Silvia is n years old. She has a twin sister. What is the total of their ages?
1 answer:
Answer: 2n
Step-by-step explanation:
Silvia is n, sister is n, total is n+n=2n.
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Step-by-step explanation:
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Im not sure but I think its 48, excuse me if im wrong.
7=-16x+7
0=-16x
0=x
7-0=0-0+7
7=7
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