Respuesta :

Answer:

21)11/16

22)n=8

23)b=19.5

Step-by-step explanation:

justicehall2002

21) add 1/4 to both sides to get x = 11/16

22) divide both sides by 1/4 to get n = 8

23) multiply both sides by 3 to get b = 19.5

Hope this helps you!