Linear Equations: One Step

出口

題 1 of 1

  剩下的時間


0
610716
0
60
block

What is the inverse operation for addition?

選擇正確的答案  

(0/0)












610719
0
60
none
610721
0
60
none
610724
0
60
none
610727
0
60
none
610729
0
60
none
610733
0
60
none
610736
0
60
none
610740
0
60
none
610743
0
60
none