What number should be added to minus 3 by 5 to get 3 by 7

1.	What number should be added to minus 3 by 5 to get 3 by 7
Answer» $\underline{\underline{\underline{\underline{\mathfrak{\blue{ \:\:\:Solution:-\:\:\:}}}}}} \\$ 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»

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