Basic Math Examples

$(3.26 \cdot 10^{- 3} mg) - (7.88 \cdot 10^{- 5} mg)$

Step 1

Multiply $7.88$ by $- 1$ .

$3.26 \cdot 10^{- 3} mg - 7.88 (10^{- 5} mg)$

Step 2

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$3.26 \cdot 10^{- 3} mg - 7.88 (\frac{1}{10^{5}} mg)$

Step 3

Raise $10$ to the power of $5$ .

$3.26 \cdot 10^{- 3} mg - 7.88 (\frac{1}{100000} mg)$

Step 4

Combine $\frac{1}{100000}$ and $- 7.88$ .

$3.26 \cdot 10^{- 3} mg + \frac{- 7.88}{100000} mg$

Step 5

Divide $- 7.88$ by $100000$ .

$3.26 \cdot 10^{- 3} mg - 0.0000788 mg$