Basic Math Examples

$4 lb - 2 {lb}^{2} oz$

Step 1

Convert $oz$ to $lb$ .

$4 lb - 2 {lb}^{2} oz \times \frac{1 lb}{16 oz}$

Step 2

Cancel the common units and simplify.

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Step 2.1

Cross cancel units.

$4 lb + \frac{- 2 {lb}^{2}}{1} \cdot \frac{oz}{1} \times \frac{1 lb}{16 oz}$

Step 2.2

Simplify the expression.

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Step 2.2.1

Remove the canceled units.

$4 lb + \frac{- 2 {lb}^{2}}{1} \cdot \frac{1}{1} \times \frac{1 lb}{16}$

Step 2.2.2

Combine fractions.

$4 lb + \frac{- 2}{16} {lb}^{3}$

Step 2.2.3

Cancel the common factor of $- 2$ and $16$ .

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Step 2.2.3.1

Factor $2$ out of $- 2$ .

$4 lb + \frac{2 (- 1)}{16} {lb}^{3}$

Step 2.2.3.2

Cancel the common factors.

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Step 2.2.3.2.1

Factor $2$ out of $16$ .

$4 lb + \frac{2 \cdot - 1}{2 \cdot 8} {lb}^{3}$

Step 2.2.3.2.2

Cancel the common factor.

$4 lb + \frac{2 \cdot - 1}{2 \cdot 8} {lb}^{3}$

Step 2.2.3.2.3

Rewrite the expression.

$4 lb + \frac{- 1}{8} {lb}^{3}$

Step 2.2.4

Move the negative in front of the fraction.

$4 lb - \frac{1}{8} {lb}^{3}$

Step 2.3

Convert to decimal.

$4 lb + 0.125 {lb}^{3}$