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Kipish [7]
3 years ago
14

Solve -21 = -9 + 2/3b

Mathematics
1 answer:
Svet_ta [14]3 years ago
3 0

Final Answer: b = -18

Steps/Reasons/Explanation:

Question: Solve -21 = -9 + \frac{2}{3}b.

<u>Step 1</u>: Simplify \frac{2}{3}b to \frac{2b}{3}.

-21 = -9 + \frac{2b}{3}

<u>Step 2</u>: Regroup terms.

-21 = \frac{2b}{3} - 9

<u>Step 3</u>: Add 9 to both sides.

-21 + 9 = \frac{2b}{3}

<u>Step 4</u>: Simplify -21 + 9 to -12.

-12 = \frac{2b}{3}

<u>Step 5</u>: Multiply both sides by 3.

-12 × 3 = 2b

<u>Step 6</u>: Simplify -12 × 3 to -36.

-36 = 2b

<u>Step 7</u>: Divide both sides by 2.

-\frac{36}{2} = b

<u>Step 8</u>: Simplify -\frac{36}{2} to -18.

-18 = b

<u>Step 9</u>: Switch sides.

b = -18

~I hope I helped you :)~

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