Algebra Examples

$1.8 \cdot 10^{11} - 7.2 \cdot 10^{10}$

Step 1

Move the decimal point in $- 7.2$ to the left by $1$ place and increase the power of $10^{10}$ by $1$ .

$1.8 \cdot 10^{11} - 0.72 \cdot 10^{11}$

Step 2

Factor $10^{11}$ out of $1.8 \cdot 10^{11} - 0.72 \cdot 10^{11}$ .

$(1.8 - 0.72) \cdot 10^{11}$

Step 3

Subtract $0.72$ from $1.8$ .

$1.08 \cdot 10^{11}$