Question

7x = 20 + 4x
It says my answer options are :
(A) 5 and 2/3 , (B) 6 and 1/3 , (C) 6 and 2/3 , and (D) 28?

Answer 1

only one answer that is 20/3
7x=20+4x

Since 4x contains the variable to solve for, move it to the left-hand side of the equation by subtracting 4x from both sides.
7x-4x=20

Since 7x and -4x are like terms, add -4x to 7x to get 3x.
3x=20

Divide each term in the equation by 3.
(3x)/(3)=(20)/(3)

Simplify the left-hand side of the equation by canceling the common terms.
x=(20)/(3)

Answer 2

so it is c

Answer 3

yes

Answer 4

6+2/3 = 20/3 right!

Answer 5

thank you (: I feel hopeless. I'm taking a test and there's so many questions like this that I can't answer ):