To convert the mixed number 84 7/10 to a decimal, follow these steps:

  1. Identify the whole number: The whole number part of the mixed number is 84.
  2. Convert the fractional part: The fractional part is 7/10. To convert this fraction to a decimal, divide the numerator (7) by the denominator (10):
    • 7 รท 10 = 0.7
  3. Add the whole number and the decimal: Now, add the decimal (0.7) to the whole number (84):
    • 84 + 0.7 = 84.7

Therefore, the mixed number 84 7/10 as a decimal is 84.7.