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प्रश्न
Carry out the following addition of a rational number.
`5/36 + 6/42`
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उत्तर
At first, we will calculate the LCM of 36 and 42. The prime factorisation is 36 and 42 is,
36 = 2 × 2 × 3 × 3
42 = 2 × 3 × 7
Now, LCM of 36 and 42 = 2 × 2 × 3 × 3 × 7 = 252
`5/36 + 6/42`
`= (5 xx 7)/(36 xx 7) + (6 xx 6)/(42 xx 6)`
`= 35/252 + 36/252`
`= (35 + 36)/252`
`= 71/252`
संबंधित प्रश्न
Find the sum:
`5/4 + ((-11)/4)`
Evaluate:
`3/8 + (-5)/12 + 3/7 + 3/12 + (-5)/8 + (-2)/7`
Evaluate:
`(2/(-3) xx 5/4) + (5/9 xx 3/(-10))`
Carry out the following addition of a rational number.
`2 3/11 + 1 3/77`
Carry out the following subtraction involving a rational number.
`13/36 - 2/40`
Write the multiplicative inverse.
7
Carry out the division of a rational number.
`2 1/5 div 5 3/6`
Carry out the division of rational number:
`5 div 2/5`
Solve:
`3 2/5 - 2 1/4`
Add: `2 1/7 + 3 8/14`.
