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Mathematics 68 Online
OpenStudy (anonymous):

x+11=20

OpenStudy (anonymous):

x=9

OpenStudy (anonymous):

8+x=4

OpenStudy (anonymous):

x=4

OpenStudy (anonymous):

-4, sorry.

OpenStudy (anonymous):

x-7=11

OpenStudy (anonymous):

x=18

OpenStudy (anonymous):

4x=40

OpenStudy (anonymous):

x=10

OpenStudy (anonymous):

3x=2+x

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