Simplify the expression below -3(10x + 4y) + 6(6x − 2y)

For this case we must simplify the following expression:

We apply distributive property to the terms of the parenthesis, taking into account that:

So, we have:

We add similar terms:

Equal signs are added and the same sign is placed, while different signs are subtracted and the sign of the major is placed:

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