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OpenStudy (anonymous):
using substitution: 4v-2u=9 2v-4u=-3
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OpenStudy (anonymous):
u = 5/2 v = 7/2
OpenStudy (anonymous):
4v-2u=9 v = (9+2u)/4
OpenStudy (anonymous):
2v-4u=-3 2((9+2u)/4 )-4u = -3
OpenStudy (anonymous):
can u solve now?
OpenStudy (anonymous):
(18+4u)/4 = 4u -3 4u + 18 = 16u - 12
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OpenStudy (anonymous):
12u = 30 u = 30/12=5/2 v = (9+2u)/4 = (9+10/2)/4 (28/2)/4 28/2 X 1/4 7/2
OpenStudy (anonymous):
complete?
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