Answer:
4x-6
Step-by-step explanation:
first you multiply the 2 and the -7 to get -14.
afterwards you add the 8 and the -14 to get -6.
you can't do anything with the 4x because we don't know what the x is.
Your answer should be 4x-6.
All of this is easily solved using PEMDAS
(parentheses, exponents, multiplication, division, addition, subtraction)
