Ineed on these ! only 27, 29, 31,

27. 6(10+n)=6.10+6.n

29. 5.x+5.7=5(x+7)

31. 10t+10.3=10(t+3)

i understand 100% 10/10 hit or miss?

step-by-step explanation:

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