caroltxo
caroltxo
29-08-2014
Mathematics
Answered
7 - y - y = -1
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konrad509
konrad509
29-08-2014
[tex]7 - y - y = -1\\ -2y=-8\\ y=4[/tex]
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Harriott
Harriott
29-08-2014
The difference between 7 and -1 is 8, you've subtracted y twice, so 8/2=4
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