Problema Solution
The sum of two numbers is less than or equal to 18. The second number is 4 more than the first. What are the possible values for the first of the two numbers?
Answer provided by our tutors
x <= 7, y <= 11
x + y <= 18
x + y <= 18
x + (x + 4) <= 18
2x + 4 <= 18
2x <= 14
x <= 7
y = x + 4
y = 7 + 4 = 11