Question

Simplify 3/4+2/5-5/20

Answer 1

Given -

$\frac{3}{4} + \frac{2}{5} - \frac{5}{20}$

To find out the value of $\frac{3}{4} + \frac{2}{5} - \frac{5}{20}$

For addition or substraction of fraction number it is important that both of denominator should be same.

LCM of 4,5 and 20 is 20.

Multiply 3/4 by 5/5 and 2/5 by 4/4 we get

$= \frac{15}{20} + \frac{8}{20} - \frac{5}{20}$

As, per the Bodmas rule

First addition and then substraction occurred.

Add 15/20 and 8/20

$= \frac{15 + 8}{20} - \frac{5}{20}$

$= \frac{23}{20} - \frac{5}{20}$

Now substrate

$= \frac{23 - 5}{20}$

$= \frac{18}{20}$

Divide by 2 we get

$= \frac{9}{10}$

For decimal convertion ,

Divide the 9 by 10 we get

$= 0.9$

Therefore,

The value of $\frac{3}{4} + \frac{2}{5} - \frac{5}{20}$ is 0.9 .

Answer 2

The given expression is as below

⇒$\frac{3}{4} +\frac{2}{5} -\frac{5}{20}$

We have to simplify the given expression

Adding $\frac{3}{4}$ and $\frac{2}{5}$, Here the denominator are different so,

taking cross multiplication we get,

⇒$\frac{15+8}{20}$$-\frac{5}{20}$

⇒$\frac{23}{20} -\frac{5}{20}$

Here the denominator values are same,  Subtracting $5$ from $23$ we get,

⇒$\frac{18}{20}$

Divide numerator and denominator by $2$ we get,

⇒$\frac{9}{10}$

Therefore, $\frac{9}{10}$ is a required answer.