Question

what should be added to minus 3 by 4 + 5 by 7 to get minus 6 by 1
4

Answer 1

$\huge{\boxed{\sf{SOLUTION -}}}$

Let the number be A.

According to Question,

$( \frac{ - 3}{4} ) + a + \frac{5}{7} = ( \frac{ - 6}{1} )$

L.C.M of 4 and 7 will be 28

$\frac{ - 21 + 28a + 20}{28} = - 6$

$- 21 + 28a + 20 = - 6 \times 28$

$- 1 + 28a = - 168$

$28a = - 168 + 1$

$28a = - 167$

$a = \frac{ - 167}{28}$

$a = - 5.96$

Hence,

Hence, The required answer is -5.96