3f+120=20-f

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Solution for 3f+120=20-f equation:


3f+120=20-f

We simplify the equation to the form, which is simple to understand 
3f+120=20-f

We move all terms containing f to the left and all other terms to the right. 
+3f+1f=+20-120

We simplify left and right side of the equation. 
+4f=-100

We divide both sides of the equation by 4 to get f. 
f=-25

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