Find the average daily balance where no new purchases are included

Will give brainliest summations with algebraic expressions image shown

7(x - 2) = 3(x + 4) solve the following equation. then enter your answer in the space provided using mixed number format.

Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.