Question

what number should be added to minus 3 by 5 to get 3 by 7​

Answer 1

$\underline{\underline{\underline{\underline{\mathfrak{\blue{ \:\:\:Solution:-\:\:\:}}}}}}$

The required number will be obtained by subtracting -3/5 from 3/7.

Therefore,

$\sf {Required\: number \:shall\: be = \dfrac{3}{7} - \bigg(\dfrac{-3}{5} \bigg) }$

$\sf {Required\: number \:shall\: be = \dfrac{3}{7} + \dfrac{3}{5} }$

$\sf {Required\: number \:shall\: be = \dfrac{3 \times 5}{7 \times 5} + \dfrac{3 \times 7}{5 \times 7}}$

$\sf {Required\: number \:shall\: be = \dfrac{15}{35} + \dfrac{21}{35} }$

$\sf {Required\: number \:shall\: be = \dfrac{15 + 21}{35} }$

$\sf {Required\: number \:shall\: be = \dfrac{36}{35} }$

Answer 2

The no. should be added to minus 3 by 5 to get 3 by 7 is 8 as 36/35...thank u