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To convert the mixed number to a decimal, we'll focus on converting the fractional part first. We want to express it with a denominator of 100, because converting to tenths or hundredths makes it easier to switch to a decimal.
Step 1: Convert to have a denominator of 100.
To get a denominator of 100, we find a factor that, when multiplied by 20, gives 100:
So, we multiply both the numerator and the denominator of by 5:
Step 2: Convert to a decimal. Since is equivalent to 0.15:
Step 3: Combine with the whole number. The original number becomes:
Therefore, the decimal form of is .