1.

Evaluate the following 4/7 + minus 8/9 + minus 13/7 + 17/21

Answer» ACCORDING to given SUM,

= > \: \frac{4}{7} + ( \frac{ - 8}{9} ) + ( \frac{ - 13}{7} ) + \frac{17}{21}

The LCM of the DENOMINATORS is 63.

= > \: \frac{36}{63} - \frac{56}{63} - \frac{117}{63} + \frac{51}{63}

= > \frac{36 - 56 - 117 + 51}{63}

= > \: \frac{ - 86}{63}


:-)Hope it helps U.


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