840=45+f

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Solution for 840=45+f equation:


Simplifying
840 = 45 + f

Solving
840 = 45 + 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.
840 + -1f = 45 + f + -1f

Combine like terms: f + -1f = 0
840 + -1f = 45 + 0
840 + -1f = 45

Add '-840' to each side of the equation.
840 + -840 + -1f = 45 + -840

Combine like terms: 840 + -840 = 0
0 + -1f = 45 + -840
-1f = 45 + -840

Combine like terms: 45 + -840 = -795
-1f = -795

Divide each side by '-1'.
f = 795

Simplifying
f = 795

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