45=36+f

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Solution for 45=36+f equation:


Simplifying
45 = 36 + f

Solving
45 = 36 + f

Solving for variable 'f'.

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

Add '-1f' to each side of the equation.
45 + -1f = 36 + f + -1f

Combine like terms: f + -1f = 0
45 + -1f = 36 + 0
45 + -1f = 36

Add '-45' to each side of the equation.
45 + -45 + -1f = 36 + -45

Combine like terms: 45 + -45 = 0
0 + -1f = 36 + -45
-1f = 36 + -45

Combine like terms: 36 + -45 = -9
-1f = -9

Divide each side by '-1'.
f = 9

Simplifying
f = 9

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