Answer:
Explanation:
Simplifying 
3f + f + 4f = 0 
Combine like terms: 3f + f = 4f 
4f + 4f = 0 
Combine like terms: 4f + 4f = 8f 
8f = 0 
Solving 
8f = 0 
Solving for variable 'f'. 
Move all terms containing f to the left, all other terms to the right. 
Divide each side by '8'. 
f = 0 
Simplifying 
f = 0 
Hoped this helped sorry if it did not
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