f(3)-9=5(9)+4(3)

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Solution for f(3)-9=5(9)+4(3) equation:


Simplifying
f(3) + -9 = 5(9) + 4(3)

Reorder the terms for easier multiplication:
3f + -9 = 5(9) + 4(3)

Reorder the terms:
-9 + 3f = 5(9) + 4(3)

Multiply 5 * 9
-9 + 3f = 45 + 4(3)

Multiply 4 * 3
-9 + 3f = 45 + 12

Combine like terms: 45 + 12 = 57
-9 + 3f = 57

Solving
-9 + 3f = 57

Solving for variable 'f'.

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

Add '9' to each side of the equation.
-9 + 9 + 3f = 57 + 9

Combine like terms: -9 + 9 = 0
0 + 3f = 57 + 9
3f = 57 + 9

Combine like terms: 57 + 9 = 66
3f = 66

Divide each side by '3'.
f = 22

Simplifying
f = 22

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