f(-5)=1-4(-5)

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Solution for f(-5)=1-4(-5) equation: 


Simplifying
f(-5) = 1 + -4(-5)

Reorder the terms for easier multiplication:
-5f = 1 + -4(-5)

Multiply -4 * -5
-5f = 1 + 20

Combine like terms: 1 + 20 = 21
-5f = 21

Solving
-5f = 21

Solving for variable 'f'.

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

Divide each side by '-5'.
f = -4.2

Simplifying
f = -4.2

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