Algebra Examples

$7.4 \cdot 10^{- 8} - 6.7 \cdot 10^{- 9}$

Step 1

Move the decimal point in $- 6.7$ to the left by $1$ place and increase the power of $10^{- 9}$ by $1$ .

$7.4 \cdot 10^{- 8} - 0.67 \cdot 10^{- 8}$

Step 2

Factor $10^{- 8}$ out of $7.4 \cdot 10^{- 8} - 0.67 \cdot 10^{- 8}$ .

$(7.4 - 0.67) \cdot 10^{- 8}$

Step 3

Subtract $0.67$ from $7.4$ .

$6.73 \cdot 10^{- 8}$