Real-life Applications of Solving Linear Equations
Ben is twice as old as his brother. Together, their ages add up to 21. How old is each of them?
B. Ben 14, Brother 7
Lisa is 3 years older than her brother. Together, their ages add up to 17. How old is each of them?
A. Lisa 10, Brother 7
The sum of two consecutive numbers is 21. What are the numbers?
A. 10 and 11