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OpenStudy (anonymous):
2a-7=-9
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OpenStudy (pokemon23):
add 7 to both sides
OpenStudy (pokemon23):
-9+7=-2
OpenStudy (lilg132):
2a = -9 + 7 a = -1
OpenStudy (pokemon23):
2a=-2
OpenStudy (pokemon23):
a=-1
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OpenStudy (lilg132):
remember to give medals in your previous answers
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