Firstly we need to simplify it:
3/75 = 1/25
We know that 1/25 is as much as 4/100 which can be written as 0,04.
Also 0,04 is as much as 4%.
I hope it'll help you :)
B has the same denominator so there is your answer
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Ok, entonces creo que sería -6 porque -6 x 3 = -16, no estoy seguro de si esto ayudará o te confundirá más, pero ten un buen día