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andreev551 [17]
3 years ago
6

Solve: −3 |1−2/3v| = −9

Mathematics
2 answers:
My name is Ann [436]3 years ago
4 0

Answer:  v = -3, v = 6

<u>Step-by-step explanation:</u>

-3\bigg|1-\dfrac{2}{3}v\bigg|=-9\\\\\\\text{Divide both sides by -3}\quad \longrightarrow \quad \bigg|1-\dfrac{2}{3}v\bigg|=3\\\\\\\text{Separate into 2 equations: one for positive and the other for negative}\\\\\qquad \underline{\qquad\text{positive}\qquad}\qquad \qquad \qquad \qquad \underline{\quad \text{negative}\quad }\\.\quad 1-\dfrac{2}{3}v=3\qquad}\qquad \qquad \qquad \qquad 1-\dfrac{2}{3}v=-3\\\\\\.\qquad \qquad \qquad \text{Substract 1 from all sides}

.\qquad -\dfrac{2}{3}v=2\qquad}\qquad \qquad \qquad \qquad -\dfrac{2}{3}v=-4\\\\\\\\.\qquad \qquad \qquad \text{Multiply all sides by }-\dfrac{3}{2}\\\\.\quad -\dfrac{2}{3}v\bigg(-\dfrac{3}{2}\bigg)=2\bigg(-\dfrac{3}{2}\bigg)\qquad}\qquad  -\dfrac{2}{3}v\bigg(-\dfrac{3}{2}\bigg)=-4\bigg(-\dfrac{3}{2}\bigg)\\\\\\.\quad \qquad \large\boxed{v=-3}\qquad \qquad \qquad \qquad \quad \large\boxed{v=6}

Anuta_ua [19.1K]3 years ago
3 0

Answer: v = -3 or 6

Step-by-step explanation:

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