Question

2/5×3/4+1/25×1/2-2/10×1/5 Simplify and express

Answer 1

Answer:

$\frac{2}{5} \times \frac{3}{4} + \frac{1}{25} \times \frac{1}{2} - \frac{2}{10} \times \frac{1}{5}$

First, we will do the multiplications because according to the BODMAS rule, BODMAS - Bracket of Division, Multiplication, Addition and Sibtraction.

$= \frac{2 \times 3}{5 \times 4} + \frac{1 \times 1}{25 \times 2} - \frac{2 \times 1}{10 \times 5}$

$= \frac{6}{20} + \frac{1}{50} - \frac{2}{50}$

Now, we will do the additions because it comes before Subtraction in BODMAS rule, to find the sum, we have to find the LCM of the two given positive rational number, the LCM of 20 and 50 is 100.

$= \frac{6 \times 5 + 1 \times 2}{100} - \frac {2}{50}$

$= \frac{30 + 2}{100} - \frac{2}{50}$

$= \frac{32}{100} - \frac{2}{50}$

Now, at last we will do the subtraction, to find the difference, we have to find the LCM of the two given rational numbers, the LCM of 100 and 50 is 100.

$= \frac{32 - 4}{100} = \frac{28}{100}$

The Answer is 28/100, to shorten it we have to write the simplest form of 28/100, which is 0.28

$= \frac{28}{100} = 0.28$

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Answer 2

Answer:

Refers to the attachment....