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OpenStudy (anonymous):
t - 9 = 17 I know this has to be easy but I can't for the life of me remember how to do it. I know how to write the justifications. Do you add 17 to both sides to start?
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jimthompson5910 (jim_thompson5910):
|dw:1411345754140:dw|
jimthompson5910 (jim_thompson5910):
The goal is to fully isolate the variable t
jimthompson5910 (jim_thompson5910):
To do so, we need to undo the subtraction of 9 we do this by adding 9 to both sides |dw:1411345794737:dw| which is a valid move due to the additive property of equality
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