-17f=20-3(7f-20)

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Solution for -17f=20-3(7f-20) equation:


Simplifying
-17f = 20 + -3(7f + -20)

Reorder the terms:
-17f = 20 + -3(-20 + 7f)
-17f = 20 + (-20 * -3 + 7f * -3)
-17f = 20 + (60 + -21f)

Combine like terms: 20 + 60 = 80
-17f = 80 + -21f

Solving
-17f = 80 + -21f

Solving for variable 'f'.

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

Add '21f' to each side of the equation.
-17f + 21f = 80 + -21f + 21f

Combine like terms: -17f + 21f = 4f
4f = 80 + -21f + 21f

Combine like terms: -21f + 21f = 0
4f = 80 + 0
4f = 80

Divide each side by '4'.
f = 20

Simplifying
f = 20

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