Respuesta :

Answer:   r=7x-1/8

Step-by-step explanation:

2(4r+3)=7x/2+5/2

4r+3=7x+5/2

4r+3-3=7x+5/2   -3

4r=7x+5/2   -3

4r/4=  7x-5/2/4  -3/4

r=7x-1/8