f(-3)=5(-3)-3

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Solution for f(-3)=5(-3)-3 equation: 


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

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

Multiply 5 * -3
-3f = -15 + -3

Combine like terms: -15 + -3 = -18
-3f = -18

Solving
-3f = -18

Solving for variable 'f'.

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

Divide each side by '-3'.
f = 6

Simplifying
f = 6

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