Maths-
General
Easy

Question

Identify each solution as rational or irrational :
4 over 7 plus fraction numerator negative 1 over denominator 3 end fraction

The correct answer is: Use lcm property


    Complete step by step solution:
    Here we have numbers as 4 over 7 and fraction numerator negative 1 over denominator 3 end fraction
    On taking the lcm of denominators, we have lcm of 7 and 3 as 21.
    So, fraction numerator 4 cross times 3 over denominator 7 cross times 3 end fraction plus fraction numerator negative 1 cross times 7 over denominator 3 cross times 7 end fraction equals 12 over 21 plus fraction numerator negative 7 over denominator 21 end fraction equals 5 over 21 which is a rational number

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