CBSE Class 7 Answered
how can we do subtraction of rational numbers
Asked by ashwinimohine39 | 18 Dec, 2022, 12:29: PM
Expert Answer
Hint
Subtraction is a reverse process of addition.
To subtract or add rational numbers, we have to make the denominator same by taking LCM, wherever required.
Example:
In the above expression, the denominators are different. Take LCM of 4 and 5, i.e. 20 and simplify the expression
becomes 
becomes 
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