Question

Solve the equation [f + 9] = 81 for f

Answer 1

f=72 because 81-9 is 72 and 9 and 72 make 81 so the answer is 72

Answer 2

Step-by-step explanation: To solve the equation

f

+

9

=

81

f+9=81 for

f

f, you need to isolate

f

f on one side of the equation. Here's how you can do it:

f

+

9

=

81

f+9=81

Subtract 9 from both sides of the equation to get

f

f by itself:

f

=

81

−

9

f=81−9

Now, perform the subtraction:

f

=

72

f=72

So, the solution to the equation is

f

=

72

f=72.