Respuesta :

Answer: b=14.7

Step-by-step explanation:

Answer: b=7.5

Step 1: Cross-multiply.

7/5 = 10.5/b

7*b=(10.5)*(5)

7b=52.5

Step 2: Divide both sides by 7.

7b/7 = 52.5/7

Therefore:

b=7.5

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