Respuesta :

abidemiokin

Answer:

Step-by-step explanation:

Given

DG = r+3

GM = 4r-28

DM = 45

Based on the given parameters the equation DM = DG+GM is true.

TI get the value of r we will substitute the given values into the expression;

r+3+4r-28 = 45

5r -25 = 45

5r = 45+25

5r = 70

r = 70/5

r = 14

Hence the value of r is 14

Yoyogr

Answer: 14

Step-by-step explanation: