(f+3)+(7f+9)=

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Solution for (f+3)+(7f+9)= equation:


Simplifying
(f + 3) + (7f + 9) = 0

Reorder the terms:
(3 + f) + (7f + 9) = 0

Remove parenthesis around (3 + f)
3 + f + (7f + 9) = 0

Reorder the terms:
3 + f + (9 + 7f) = 0

Remove parenthesis around (9 + 7f)
3 + f + 9 + 7f = 0

Reorder the terms:
3 + 9 + f + 7f = 0

Combine like terms: 3 + 9 = 12
12 + f + 7f = 0

Combine like terms: f + 7f = 8f
12 + 8f = 0

Solving
12 + 8f = 0

Solving for variable 'f'.

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

Add '-12' to each side of the equation.
12 + -12 + 8f = 0 + -12

Combine like terms: 12 + -12 = 0
0 + 8f = 0 + -12
8f = 0 + -12

Combine like terms: 0 + -12 = -12
8f = -12

Divide each side by '8'.
f = -1.5

Simplifying
f = -1.5

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