Question

solve : a) 1/2 + 2/3. b) 2/5 - 3/10​

Answer 1

a) 1/2 + 2/3

by taking LCM = 6

= 1/2 *3/3 = 3/6 and 2/3 * 2/2 = 4/6

so 3/6+ 4/6

= 7/6

b) 2/5 - 3/10

by taking LCM = 10

2/5 = 4/10 and 3/10 will be same

now 4/10 - 3/10

= 1/10

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Answer 2

Answer:

a)

1/2+2/3

1×3. 2×2

---------. + -----------

2×3. 3×2

= 3. . 4

-----. + -----

6. 6

3+4. 7

=. --------- = ----

6. 6

b)

2. 3

---. -. ---

5. 10

2×2. 3

= --------. -. ----

5×2. 10

=. 4-3

------

10

= ⅒