If ( ⁻¹ x+ ⁻¹ y= 4 5 ), then ( ⁻¹ x+ ⁻¹ y ) is equal to

Step-by-step solution

Given that, ( ⁻¹ x+ ⁻¹ y= 4 5 ) We know that, ( ⁻¹ x+ ⁻¹ x= 2 ) ( ⁻¹ x= I I 2 - ⁻¹ x ) So, ( 2 - ⁻¹ x+ 2 - ⁻¹ y= 4 5 ) ( 2 + 2 = 4 5 + ⁻¹ x+ ⁻¹ y ) ( ⁻¹ x+ ⁻¹ y= - 4 x 5 = 5 )