CPM Homework Help : CCA Problem 6-20

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6-20.

Rewrite each equation by solving for the indicated variable.

$V = L W H \:( \text {for } W )$

Hint (a):
${\frac{V}{LH}}={\frac{LWH}{LH}}$
Answer (a):
$\frac{V}{LH}=W$

$y = \frac { x } { 2 } + 3\: ( \text {for } x )$

Hint (b):
$y-3=\frac{x}{2}$
Answer (b):
$x = 2\left(y − 3\right)$

$\frac { E } { R } = I\: ( \text {for } R )$

Hint (c):
First, multiply both sides by R.

$2 x + \frac { 1 } { y } = 3 \:( \text {for } y )$

Hint (d):
See part (b).

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