18f+9-9f=4-8(-2f+9)

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Solution for 18f+9-9f=4-8(-2f+9) equation:


Simplifying
18f + 9 + -9f = 4 + -8(-2f + 9)

Reorder the terms:
9 + 18f + -9f = 4 + -8(-2f + 9)

Combine like terms: 18f + -9f = 9f
9 + 9f = 4 + -8(-2f + 9)

Reorder the terms:
9 + 9f = 4 + -8(9 + -2f)
9 + 9f = 4 + (9 * -8 + -2f * -8)
9 + 9f = 4 + (-72 + 16f)

Combine like terms: 4 + -72 = -68
9 + 9f = -68 + 16f

Solving
9 + 9f = -68 + 16f

Solving for variable 'f'.

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

Add '-16f' to each side of the equation.
9 + 9f + -16f = -68 + 16f + -16f

Combine like terms: 9f + -16f = -7f
9 + -7f = -68 + 16f + -16f

Combine like terms: 16f + -16f = 0
9 + -7f = -68 + 0
9 + -7f = -68

Add '-9' to each side of the equation.
9 + -9 + -7f = -68 + -9

Combine like terms: 9 + -9 = 0
0 + -7f = -68 + -9
-7f = -68 + -9

Combine like terms: -68 + -9 = -77
-7f = -77

Divide each side by '-7'.
f = 11

Simplifying
f = 11

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