verify the following and state the property used for verification.
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Answer:
The property used is cumulative law of addition
Step-by-step explanation:
-5/9 +7/21
LCM of 9,21=63
=(-5*7+7*3)/63
=(-35+21)/63=-14/63
=-2/9
Also
7/21+(-5/9)
LCM of 9,21=63
=(3*7-7*5)/63
=(21-35)/63=-14/63
=--2/9
Thus lhs=rhs
The propery used is cumulative law of addition
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