Respuesta :

Answer:

r = 15/4

Step-by-step explanation:

Distrubute: 4/5r + (4/5)*5 = 7

Simplify: 4/5r + 4 = 7

Subtract: 4/5r = 3

Divide: r = 3 * 5/4

Simplify: r = 15/4

Result: r = 15/4