Solving by Combining Like Terms
Simplify. 8b + 3b
11b
4x + 9 = 33
x = 6
WRITE AN EQUATION & SOLVE: Julie is 3 years older than her sister. Julie's age is 11 years old. How old is her sister?
n - Julie's sister's age n + 3 = 11 n = 8 Julie's sister is 8 years old.