Question

addition subtraction multiplication and division of rational number 4/7-4/9

Answer 1

$Heya$‼


1 • $ADDITION$

$\frac{4}{7}+(-\frac{4}{9})$

$=\frac{4}{7}-{4}{9}$

$=\frac{36-28}{63}$

$=\frac{8}{63}$

$=0.12$



2 • $SUBTRACTION$

$\frac{4}{7}-(-\frac{4}{9}$

$=\frac{4}{7}+\frac{4}{9}$

$=\frac{36+28}{63}$

$=\frac{64}{63}$

$=1.01$



3 • $MULTIPLICATION$

$=\frac{4}{7}*(-\frac{4}{9})$

$=\frac{-16}{63}$

$=-0.25$



4 • $DIVISION$

$= \frac{4}{7}$÷$(-\frac{4}{9})$

$=\frac{4}{7}*\frac{9}{-4}$

$=\frac{-7}{9}$

$=-0.78$