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enyata [817]
3 years ago
7

Encontar x y y de 3x + 2y =9 x + 3y=10

Mathematics
1 answer:
sladkih [1.3K]3 years ago
6 0
X=-3y+10
3(-3y+10)+2y=9
-9y+30+2y=9
-7y+30=9
-7y=-21
y=3
X=-3(3)+10
X=1
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