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| Math Central | Quandaries & Queries |
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Question from Dadzie: x+s=8→1 |
Hi,
Since $x + s = 8$ and $y + x = 13$ we know that
\[ (x + s) - (y + x) = 8 - 13.\]
Simplifying gives
\[s - y = -5.\]
What can you do with equations 3 and 4 to get another equation involving only $s$ and $y?$
Penny
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