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5 votes
Does anyone know -6/7+6/21

User Zana
by
7.0k points

1 Answer

3 votes
Simple...

you have:
-(6)/(7) + (6)/(21)

You must find a common denominator first-->>


- (6)/(7) * (3)/(3) = -(18)/(21)

Now...


- (18)/(21) + (6)/(21) = -(12)/(21)


= -(12)/(21)

Simplify it-->>
-(4)/(7)

Thus, your answer.

User Fagiani
by
7.7k points