please solve my problem
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Step-by-step explanation:
2 /21 + 9 / 24 (LCM OF 21 AND 24 = 168.Now we have to make both the denominators same i.e 168 ,for that multiply 21 by 8 and 24 by 7 ,remember what you multiply the denominator with you have to multiply the numerator with the same digit ).
=2 * 8 / 21 *8 + 9 * 7 / 24 * 7
=16 / 168 + 63 /168
=16 +63 / 168
=79 / 168
Another method is that you have to multiply 2 with 24 + 9 multiply with 21 and 21 multiply with 24
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