f(-7)=-5(-7)-1

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Solution for f(-7)=-5(-7)-1 equation: 


Simplifying
f(-7) = -5(-7) + -1

Reorder the terms for easier multiplication:
-7f = -5(-7) + -1

Multiply -5 * -7
-7f = 35 + -1

Combine like terms: 35 + -1 = 34
-7f = 34

Solving
-7f = 34

Solving for variable 'f'.

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

Divide each side by '-7'.
f = -4.857142857

Simplifying
f = -4.857142857

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