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Question
Carry out the following addition of a rational number.
`1 2/3 + 2 4/5`
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Solution
`1 2/3 + 2 4/5`
`= (1xx3+2)/3 + (2xx5+4)/5`
`= 5/3 +14/5`
Now, the LCM of 3 and 5 is 15.
`5/3 + 14/5`
`= (5 xx 5)/(3 xx 5) + (14 xx 3)/(5 xx 3)`
`= 25/15 + 42/15`
` = (25 + 42)/15`
`= 67/15`
RELATED QUESTIONS
Add, the pair of rational numbers, given below, and show that their addition (sum) is also a rational number
`(-5)/8` and `3/8`
Add, the pair of rational numbers, given below, and show that their addition (sum) is also a rational number
`7/(-18) "and" 8/27`
Fill in the Blank
If `a/b` is additive inverse of `(-c)/d`, then `(-c)/d` is additive inverse of ------.
Evaluate:
`(2/(-3) xx 5/4) + (5/9 xx 3/(-10))`
Carry out the following subtraction involving a rational number.
`4 1/2 - 3 1/3`
Multiply the following rational number.
`3/11 xx 2/5`
Write the multiplicative inverse.
`(-3)/8`
Carry out the division of rational number:
`9/11 div (-8)`
Carry out the division of rational number:
`5 div 2/5`
Solve:
`12/5 xx ((-10))/3`
