Convert Decimal 0.7 to Fraction: Step-by-Step Solution

To solve this problem of converting the decimal 0.7 into a fraction, follow these clear steps:

• Step 1: Understand the place value of the decimal number 0.7. The digit 7 is in the tenths place, which means it can be expressed as a fraction over 10.
• Step 2: Write down the fraction as $\frac{7}{10}$. Here, 7 is the numerator, representing the part, and 10 is the denominator, representing the whole.
• Step 3: Check if the fraction $\frac{7}{10}$ can be simplified. Since 7 and 10 have no common divisors other than 1, the fraction is already in its simplest form.

Therefore, the decimal 0.7 is equivalent to the fraction $\frac{7}{10}$.

Comparing this result with the given choices, the correct answer is choice 2: $\frac{7}{10}$.

Thus, the solution to the problem is $\frac{7}{10}$.