<h2>Anser</h2>
53
Step-by-step explanation:
(6-6)+7×7+4
=0+7×7+4
=7×7+4
=49+4
=53
Answer:
11 years old
Step-by-step explanation:
If four brothers have the average age 6, then the sum of their ages is
years.
Let x years be the age of sister. If four brothers and their sister have the average age 7, then
Multiply this equation by 5:
The sister is 11 years old.
Answer:
Step-by-step explanation:
I have attached the explanation above. hopefully this will help