What property is 7+(a+b)=(7+a)+b

associative property

Step-by-step explanation:

Associative property of addition is when you move the parentheses but the values don't move

Hope this helps you out

hope it you

step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2

the real question is why is this guys last name heavyfoot

step-by-step explanation: