Combine like terms to simplify the expression:
9 + 3b − 1 + 7b − 2 =

6 + 10b.

Step-by-step explanation:

We begin with: 9 + 3b -1 + 7b - 2 =

Combining like terms produces:

9 - 1 -2 + 3b + 7b -->

6 + 10b.

for the first question it would be the second answer for the second question it would be the third answer and for the third question it would be the first answer

step-by-step explanation:

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step-by-step explanation:

domit