(4f+5)-(5f-40)=100

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Solution for (4f+5)-(5f-40)=100 equation:


Simplifying
(4f + 5) + -1(5f + -40) = 100

Reorder the terms:
(5 + 4f) + -1(5f + -40) = 100

Remove parenthesis around (5 + 4f)
5 + 4f + -1(5f + -40) = 100

Reorder the terms:
5 + 4f + -1(-40 + 5f) = 100
5 + 4f + (-40 * -1 + 5f * -1) = 100
5 + 4f + (40 + -5f) = 100

Reorder the terms:
5 + 40 + 4f + -5f = 100

Combine like terms: 5 + 40 = 45
45 + 4f + -5f = 100

Combine like terms: 4f + -5f = -1f
45 + -1f = 100

Solving
45 + -1f = 100

Solving for variable 'f'.

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

Add '-45' to each side of the equation.
45 + -45 + -1f = 100 + -45

Combine like terms: 45 + -45 = 0
0 + -1f = 100 + -45
-1f = 100 + -45

Combine like terms: 100 + -45 = 55
-1f = 55

Divide each side by '-1'.
f = -55

Simplifying
f = -55

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