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galben [10]
3 years ago
12

Cary is 9 years older than Dan. In 7 years, the sum of their ages will equal 93. Find both of their

Mathematics
1 answer:
a_sh-v [17]3 years ago
3 0
Cary's age is 9 years MORE than Dan's age.
Cary's age is Dan's age, but with 9 more years added to that.
Here is how we can express that,
\rm C=D+9
In 7 years, Cary will be C+7 years old,
and Dan will be D+7 years old.
In 7 years, the sum of their ages,
(C+7) and (D+7) will equal 93.

Here is how we can express that:
\rm (C+7)+(D+7)=93

You have a system of two equations involving two unknowns. You have a couple of nice options here. You can apply substitution or elimination to complete the problem.
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Below.

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