х=10
I'm so sorry, i don't know how it's called (because English isn't my native language) but there are angles that have the same value
maybe u'll tell me..
Homie post the whole question
what is k?
Answer
Subtract
from 
then;

Remove the bracket we have;

Like terms are those terms which have same variable to the same power.
Combine like terms;

Therefore, Subtracting
from
we get 
Answer:
6x - 3
Step-by-step explanation:
2(x-3) + 4x + 3
= 2x - 6 + 4x + 3 (Multiply out)
= 2x + 4x - 6 + 3 (Rearrange)
= 6x - 3