Question

using suitable rearrangement find :
a.) 4/7 ( -4/9 ) + 3/7 + ( - 13/9 )

Answer 1

4/7(-4/9+3/7)+(13/9)
=4/7 (-28+27/63)+-13/9
=4/7(-1/63)-13/9
=4/7(-1/63-13/9)
=4/7(-7/63)
-28/441

Answer 2

Answer:

I am also with the same question