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Mathematics
Lucille Wiggins
1 December, 21:14
If p+q=36 and p-q=20 then q=?
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Dragonfly
2 December, 00:40
0
Step-by-step explanation:
using substitution method.
p-q=20 so p=20+q Substitute into
P+q=36
Therefore 20+q+q = 36
20+2q=36
2q=36-20
2q=16
q = 16/2
q=8
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