F=7/3(n-70)

The formula is:

F = 7/3(n-70)

To simplify the given expression, follow these steps:

Step 1: Distribute 7/3 to the terms inside the parentheses.
F = (7/3 * n) - (7/3 * 70)

Step 2: Multiply 7/3 by n and 7/3 by 70.
F = (7/3 * n) - (490/3)

Step 3: Simplify the fractions.
F = (7n/3) - (490/3)

Therefore, F = 7n/3 - 490/3.