Question

ans please with full formula only question ii

Answer 1

let the number that should be added to -6/11 to get 4/9 be x
then
x+(-6/11)=4/9
take -6/11 to right hand side
x=4/9 + 6/11
x=44+54/99
x=98/99

Answer 2

$x + ( - \frac{6}{11} ) = \frac{4}{9} \\ 11x - 6 = \frac{11 \times 4}{9} \\ 11x = \frac{44}{9} + 6 \\ 11x = \frac{98}{9} \\ x = \frac{98}{99}$