Step-by-step explanation:
Follow PEMDAS

P: Parentheses
E : Exponents
M: Multiplication
D: Division
A: Addition
S: Subtraction

Question 2

You have to change the denominator of 6/10 into 100 then you will get 60/100 then you add 15/10+60/100
The answer is 9y^2x(the 2 goes on top were the arrow is ) Hope this was helpful!