Respuesta :

Answer:

Step-by-step explanation:

20/1.6=12.5

12.5-3.5=9

9=b
Answer:
9

Explanation:

First you multiply 1.6 by b and 3.5.
1.6b+5.6=20

Then you move everything besides b over to one side and change the sign.
1.6b=20-5.6

Next you subtract 20 by 5.6.
20-5.6=14.4

Finally you divide 1.6 by both sides.
b=14.4/1.6
b=9

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