Question

$5\frac{13}{20}-4\frac{3}{10}=$ $1\frac{x}{20}$. Find x.

Answer 1

We have

$5\frac{13}{20}-4\frac{3}{10}=1\frac{x}{20}$

$\Rightarrow \frac{113}{20}-\frac{43}{10}=\frac{20+x}{20}$

$\Rightarrow \frac{113-86}{20}=\frac{20+x}{20}\left[L.C.Mof10\&20=20\right]$

$\Rightarrow 113-86=20+x\left[cancle20bothsides\right]$

$\Rightarrow 27=20+x$

$\Rightarrow x=27-20$

$\therefore x=7$

Hence, the value of $x=7$