What is (2x+3 and two fifths)+(5x-four fifths)

Question

It says to simplify each expression but I am stuck

Answer 1

(2x + 3 2/5) + (5x - 4/5)

convert 3 2/5 into a fraction (3*5)+2 = 17/5

2x + 17/5 + 5x - 4/5

7x + 17/5 - 4/5

7x + 13/5

7x + 2 3/5        7x+ 2 and 3/5