Answer :
Carl present age is 10 years while Dennis present age is 19 years.
What is an equation?
An equation is an expression that shows the relationship between two or more variables and numbers.
Let x represent Carl present age and y represent Dennis present age, hence:
x + y = 29 (1)
Also:
After 6 years:
x + 6 = y - 3 (2)
From both equations:
x = 10, y = 19
Carl present age is 10 years while Dennis present age is 19 years.
Find out more on equation at: https://brainly.com/question/2972832