You would multiply 4 by 72 then u multiply 4 * -6 then after that you would add 15

subtract the numbers:


subtract 9 from both sides

simplify

divide both sides by 6


decimal

Hope this helps :)
Parentheses first. 1-4= -3. 4-3=1. 1-2=-1.
The answer is -1.
1. D
2. D
I don't know the answer to number 3 sorry.