Question

Multiply the sum of 6/7 and -13/21 by their difference

Answer 1

Answer:

155/21

Step-by-step explanation:

{6/7 + (-13/21)}×{6/7 - (-13/21)}

=>LCM OF 7 and 21=21

=>(18/21-13/21)×(18/21+13/21)

=>(5/21)×(31/21)

=>155/21

HOPE THE ANSWER IS CORRECT.