Question

13. Subtract: (i) 1/3 from 2
(ii) -4/7 from -3/4​

Answer 1

Answer:

1)2-1/3 = 5/3

2)-3/4- (-4/7)

  = -3/4 + 4/7

= -21+16/28 = -5/28

Answer 2

Answer:

The answer is -

Step-by-step explanation:

To subtract (i) 1/3 from 2 and (ii) -4/7 from -3/4

Follow the basic rules of subtraction and rules of finding L.C.M

(i)

= 2 - $\frac{1}{3}$

Now, take L.C.M of the denominators 1 and 3

The L.C.M is 3

So,

$\frac{2}{1}$ × $\frac{3}{3}$ and $\frac{1}{3}$ × $\frac{1}{1}$ [To make the denominators equal]

$\frac{6}{3}$ and $\frac{1}{3}$

Now,

= 2 - $\frac{1}{3}$

= $\frac{6}{3}$ - $\frac{1}{3}$

= $\frac{6 - 1}{3}$

= $\frac{5}{3}$ (5/3)

(ii)

= -3/4 - -4/7

Now, take L.C.M of the denominators 4 and 7

The L.C.M is 28

So,

$\frac{-3}{4}$ × $\frac{7}{7}$ and $\frac{-4}{7}$ × $\frac{4}{4}$ [To make the denominators equal]

$\frac{-21}{28}$ and $\frac{-16}{28}$

Now,

= -3/4 - -4/7

= $\frac{-21}{28}$ - $\frac{-16}{28}$

= $\frac{(-21) - (-16)}{28}$

= $\frac{-21 + 16}{28}$

= $\frac{-5}{28}$ (-5/28)

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