Question

completeaza numaratorul care lipseste: a/3+a/3=2/3 ; a/3-a/3=2/3

Answer 1

1/3+1/3=2/3
3/3-1/3=2/3

Answer 2

1 supra 3 + 1supra 3= 2 supra 3
 
 4 supra 3 - 2 supra 3 = 2 supra 3