3 years ago

Someone help me on this.

Mathematics

1 answer:

harina [27]3 years ago

6 0

$\frac{f}{5}=\frac{f+3}{20}$ Cross multiply. (multiply 5 on both sides, and multiply 20 on both sides)

(20)f = 5(f + 3) Multiply 5 into (f + 3)

20f = 5f + 15 Subtract 5f on both sides

15f = 15 Divide 15 on both sides to get "f" by itself

f = 1

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