23=-6+9(f+7)

Solution for 23=-6+9(f+7) equation:

Simplifying
23 = -6 + 9(f + 7)

Reorder the terms:
23 = -6 + 9(7 + f)
23 = -6 + (7 * 9 + f * 9)
23 = -6 + (63 + 9f)

Combine like terms: -6 + 63 = 57
23 = 57 + 9f

Solving
23 = 57 + 9f

Solving for variable 'f'.

Move all terms containing f to the left, all other terms to the right.

Add '-9f' to each side of the equation.
23 + -9f = 57 + 9f + -9f

Combine like terms: 9f + -9f = 0
23 + -9f = 57 + 0
23 + -9f = 57

Add '-23' to each side of the equation.
23 + -23 + -9f = 57 + -23

Combine like terms: 23 + -23 = 0
0 + -9f = 57 + -23
-9f = 57 + -23

Combine like terms: 57 + -23 = 34
-9f = 34

Divide each side by '-9'.
f = -3.777777778

Simplifying
f = -3.777777778