Question

$\frac{4.2}{2} \: + \: 2.8$
$solve \: the \: given \: fraction \: and \: explain \: to \ \\ do \: addition$
​

Answer 1

$\sf i) \: \: \dfrac{4.2}{2} + 2.8$

First, take the L.C.M of the denominators and cross multiply it.

$\sf : \implies \: \dfrac{(4.2 \times 1 )+(2.8 + 2) }{2}$

$\sf : \implies \: \dfrac{4.2 + 5.6}{2}$

Now, add the numerators..

$\sf : \implies \: \dfrac{9.8}{2}$

Now, reduce it to its lowest term, if possible or else write the answer in decimal or mixed fraction.

$\sf : \implies \: \dfrac{ \cancel{98} \: ^{49} }{ \cancel2 \times 10} \\ \\ \sf : \implies \: \frac{49}{10}$

$\boxed{ \underline{ \gray{ \sf : \implies \: {4.9} \: \: \: or \: \: \: 4 \dfrac{9}{10} \: \: \: ....ans }}}$