Algebra
# Solving Equations

On a 2-day roadtrip, Janet drove \(210\) miles the first day, and \(S\) miles on the second day. She drove a total of \(570\) miles.

Which of the following mathematical statements expresses the above?

For his exercise, James runs \(D\) miles every weekday, \(E\) miles on Saturday, and \(E\) miles on Sunday. He runs a total of 27 miles each week.

Which of the following mathematical statements represents the above?

Alex and Bella have 24 sweets in total. Bella has 6 sweets more than Alex.

If \(A\) represents Alex's sweets, which of the following statements represents the above relationship?

John is 3 years older than Mary, and Mary is 9 years older than Zack.

Which of the following statements represents their age?

Elle's cellphone was fully charged when she got a call from her friend. She used \(x\)% of the battery while she was on the phone, and her cellphone is 87% charged now.

Which of the following mathematical statements describes the above?

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