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13+f/4=18
We simplify the equation to the form, which is simple to understand
13+f/4=18
Simplifying:
13 + 0.25f=18
We move all terms containing f to the left and all other terms to the right.
+ 0.25f=+18-13
We simplify left and right side of the equation.
+ 0.25f=+5
We divide both sides of the equation by 0.25 to get f.
f=20
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