Question

What should be subtracted from the product of 3/7 &1/5 to get 4/35?

Answer 1

LET THE UNKNOW NUMBER BE x

ACCORDING TO THE QUESTION,

$(\frac{3}{7} \times \frac{1}{5}) - x = \frac{4}{35} \\ \\ \implies \frac{3}{35} - x = \frac{4}{35} \\ \\ \implies \frac{(3 - 35x)}{35} = \frac{4}{35} \\ \\ \implies 3 - 35x = 4 \\ \\ \implies - 35x = 1 \\ \\\implies \boxed{x = \frac{1}{ - 35} }$

Therefore, the unknown number is 1/-35.