7(5+f)=9(f+3)

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Solution for 7(5+f)=9(f+3) equation:


Simplifying
7(5 + f) = 9(f + 3)
(5 * 7 + f * 7) = 9(f + 3)
(35 + 7f) = 9(f + 3)

Reorder the terms:
35 + 7f = 9(3 + f)
35 + 7f = (3 * 9 + f * 9)
35 + 7f = (27 + 9f)

Solving
35 + 7f = 27 + 9f

Solving for variable 'f'.

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

Add '-9f' to each side of the equation.
35 + 7f + -9f = 27 + 9f + -9f

Combine like terms: 7f + -9f = -2f
35 + -2f = 27 + 9f + -9f

Combine like terms: 9f + -9f = 0
35 + -2f = 27 + 0
35 + -2f = 27

Add '-35' to each side of the equation.
35 + -35 + -2f = 27 + -35

Combine like terms: 35 + -35 = 0
0 + -2f = 27 + -35
-2f = 27 + -35

Combine like terms: 27 + -35 = -8
-2f = -8

Divide each side by '-2'.
f = 4

Simplifying
f = 4

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