24. solve the equation 6x + 21 = 3(2x +7)
a. no solution
b. x = 0
enivigatan tevo
c. identity equation (all real numbers)
d. x = 21

C. all real numbers

Step-by-step explanation:

unless if u could do my questions, if not i wouldn't want to

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