f(9)=5*9*9+5*9-7

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Solution for f(9)=5*9*9+5*9-7 equation: 


Simplifying
f(9) = 5 * 9 * 9 + 5 * 9 + -7

Reorder the terms for easier multiplication:
9f = 5 * 9 * 9 + 5 * 9 + -7

Multiply 5 * 9
9f = 45 * 9 + 5 * 9 + -7

Multiply 45 * 9
9f = 405 + 5 * 9 + -7

Multiply 5 * 9
9f = 405 + 45 + -7

Combine like terms: 405 + 45 = 450
9f = 450 + -7

Combine like terms: 450 + -7 = 443
9f = 443

Solving
9f = 443

Solving for variable 'f'.

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

Divide each side by '9'.
f = 49.22222222

Simplifying
f = 49.22222222

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