Solve for x.Check your answers. A) 20=9+x     B)0=x+5

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20=9+x

In order to solve for x you must get the x by itelf:

20-9 = x

`therefore 11=x`

Please post your other question separately as in terms of the eNotes rules, only one question can be answered at a time: or you can try using the same principles here to answer your other question.

`therefore` x=11

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