Respuesta :
Distributive property then subtract...think of it as going the opposite of pemdas when solving for a variable
3r+24=72
3r=48
r=16
3r+24=72
3r=48
r=16
U have to distribute first so it would be:
3r+24=72
3r=48
r=16
3r+24=72
3r=48
r=16