Respuesta :
Answer:
Step-by-step explanation:
2r - 3.1 = 1.7
Bringing like terms on one side
2r = 1.7 + 3.1
2r = 4.8
r = 4.8 / 2 = 2.4
r = 2.4

Answer:
Step-by-step explanation:
2r - 3.1 = 1.7
Bringing like terms on one side
2r = 1.7 + 3.1
2r = 4.8
r = 4.8 / 2 = 2.4
r = 2.4