23=f(17)+f(22)+f(21)+f(20)+f(15)+f(16)

Solution for 23=f(17)+f(22)+f(21)+f(20)+f(15)+f(16) equation:

Simplifying
23 = f(17) + f(22) + f(21) + f(20) + f(15) + f(16)

Reorder the terms for easier multiplication:
23 = 17f + f(22) + f(21) + f(20) + f(15) + f(16)

Reorder the terms for easier multiplication:
23 = 17f + 22f + f(21) + f(20) + f(15) + f(16)

Reorder the terms for easier multiplication:
23 = 17f + 22f + 21f + f(20) + f(15) + f(16)

Reorder the terms for easier multiplication:
23 = 17f + 22f + 21f + 20f + f(15) + f(16)

Reorder the terms for easier multiplication:
23 = 17f + 22f + 21f + 20f + 15f + f(16)

Reorder the terms for easier multiplication:
23 = 17f + 22f + 21f + 20f + 15f + 16f

Combine like terms: 17f + 22f = 39f
23 = 39f + 21f + 20f + 15f + 16f

Combine like terms: 39f + 21f = 60f
23 = 60f + 20f + 15f + 16f

Combine like terms: 60f + 20f = 80f
23 = 80f + 15f + 16f

Combine like terms: 80f + 15f = 95f
23 = 95f + 16f

Combine like terms: 95f + 16f = 111f
23 = 111f

Solving
23 = 111f

Solving for variable 'f'.

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

Add '-111f' to each side of the equation.
23 + -111f = 111f + -111f

Combine like terms: 111f + -111f = 0
23 + -111f = 0

Add '-23' to each side of the equation.
23 + -23 + -111f = 0 + -23

Combine like terms: 23 + -23 = 0
0 + -111f = 0 + -23
-111f = 0 + -23

Combine like terms: 0 + -23 = -23
-111f = -23

Divide each side by '-111'.
f = 0.2072072072

Simplifying
f = 0.2072072072