Question

Question 94 (b)

Taking $x=\frac{-4}{9},y=\frac{5}{12}$ and $z=\frac{7}{18},$ find
The rational number which subtracted from y gives z.

Answer 1

Given, $x=\frac{-4}{9},y=\frac{5}{12}andz=\frac{7}{18}$
Let we subtract A from y to get z.
$\therefore y-A=z\Rightarrow \frac{5}{12}-A=\frac{7}{18}$
$\Rightarrow -A=\frac{7}{18}-\frac{5}{12}=\frac{7\times 2-5\times 3}{36}$ [$\because$ LCM of 18 and 12 = 36]
$=\frac{14-15}{36}=\frac{-1}{36}\Rightarrow A=\frac{1}{36}$