Question

If 8b-9=b then 7b=?
Please answer if you can!
Also it’s NOT 1.5

Answer 1

9 is your answer.

Explanation:

Solve for b. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.

First, add 9 to both sides:

8b - 9 (+9) = b (+9)

8b = b + 9

Next, subtract b from both sides:

8b (-b) = b (-b) + 9

8b - b = 9

7b = 9

Divide 7 from both sides:

(7b)/7 = (9)/7

b = 9/7

Plug in 9/7 for b in the equation given:

7(b) = 7(9/7) = 9

9 is your answer.

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