Solve 42*10^-2+42*10^-1

$$42 \cdot 10 ^ { - 2 } + 42 \cdot 10 ^ { - 1 }$$

Evaluate

$$\frac{231}{50}=4.62$$

Solution Steps

Calculate 10 to the power of -2 and get \frac{1}{100}.

$$42\times \frac{1}{100}+42\times 10^{-1}$$

Multiply 42 and \frac{1}{100} to get \frac{21}{50}.

$$\frac{21}{50}+42\times 10^{-1}$$

Calculate 10 to the power of -1 and get \frac{1}{10}.

$$\frac{21}{50}+42\times \frac{1}{10}$$

Multiply 42 and \frac{1}{10} to get \frac{21}{5}.

$$\frac{21}{50}+\frac{21}{5}$$

Add \frac{21}{50} and \frac{21}{5} to get \frac{231}{50}.

$$\frac{231}{50}$$

Factor

$$\frac{3 \cdot 7 \cdot 11}{2 \cdot 5 ^ {2}} = 4\frac{31}{50} = 4.62$$