10, because when you add 5 and 7 then subtract 10 it equals 2
Let the age of Junior be x,
age of grandpa schmidt = 7x + 9
7x + 9 = 75
7x = 66
x = 66/7
= 9.43 (to three significant figures)
Junior is 9.43 years old.
Answer:
the answer is 6
Step-by-step explanation:
yes u are suppose to simplify