It will take her 51.4 minutes.
Explanation:
You would do 12/7 and then multiply that answer by 30.
Seven hundred and thirteen thousand, two hundred and ninety eight
Remove parentheses
2/5 • d-10 - 2/3 • d+6
calculate
2/5d-4 - 2/3d-4
the answer
-4/15d-8
