Question

Micah is three more than 5 times the age of his sister. If Micah is 18 years old, then what is the age of his sister? Identify the two operations, in their appropriate order, needed to solve this problem

Answer 1

His sister is 3 years old.

Explanation:

Micah - M

Sister - S

M = 3 + 5S

18 = 3 + 5S

15 = 5S

3 = S

His sister is 3.