Star equation

If 5/21 + 14/21 + ☆ = 1, then what is the value of ☆?

Correct answer:

☆ =  2/21

Step-by-step explanation:

5/21+14/21+=1  215+2114+=1 2114+5+=2121 2119+=2121 =21212119  =212119=212=0.0952



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