Question

(5x)/2-7/8=14

Answer 1

I don't understand why you did what you did for the first problem

Answer 2

(5x)/(2)-(7)/(8)=14

Factor out the GCF of (1)/(2) from (5x)/(2)-(7)/(8).
(1(5x-(7)/(4)))/(2)=14

Multiply each term in the equation by 2.
(20x-7)/(4)=28

Multiply each term in the equation by 4.
20x-7=112

20x=119

Divide each term in the equation by 20.
x=(119)/(20)