Asked by Isabella

I want to know what 9 + blank equals 19
Answered by Isabella
I'm not very sure can you answer me
Answered by oobleck
9+___=19
subtract 9 from both sides and you have
9+___-9 = 19-9
since 9-9=0, this is just
___ = 10

that is, 9+10 = 19
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