1.

Verify the following and state the property used for verification. ​

Answer»

The property USED is cumulative law of additionStep-by-step explanation:-5/9 +7/21LCM of 9,21=63=(-5*7+7*3)/63=(-35+21)/63=-14/63=-2/9Also 7/21+(-5/9)LCM of 9,21=63=(3*7-7*5)/63=(21-35)/63=-14/63=--2/9Thus lhs=rhsThe PROPERY used is cumulative law of addition



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