Question 745860
Meres cat is three years older than her dog. The sum of her pets' age is 14. How old is her dog?
Let, c - the cat's age and d - the dog's age
cat is three years older than dog: {{{c = d+3}}}
The sum of her pets' age is 14: {{{c+d=14}}}

*[invoke linear "c", "d", 1, -1, 3, 1, 1, 14 ]

Therefore, her dog is 5 and 1/2 years old!