Jeremy is x years old. He is 5 years younger than his sister. Together, the sum of their ages is 29 years. Enter an equation that can be used to find Jeremy\'s age (x).
Jeremy is 12 years old
1. X+Y=29 (sum of their ages)
2. X=Y-5 (he is 5 years younger than his sister)
*Substitute eq 2 into eq 1
2Y=36 (divide both sides by 2)
Substitute value of Y into eq 1 to find X
Hence why Jeremy is 12