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Estudos Gerais04/18/2024

25. Resolva no caderno cada sistema linear dado. Use o métod...

  1. Resolva no caderno cada sistema linear dado. Use o método que preferir. a) {x+y=5xy=1\left\{\begin{array}{l}x+y=5 \\ x-y=1\end{array}\right. c) {20x+10y=10x+y=2\left\{\begin{aligned} 20 x+10 y & =10 \\ x+y & =2\end{aligned}\right. b) {2x+y=0x+4y=14\left\{\begin{array}{r}2 x+y=0 \\ x+4 y=14\end{array}\right. d) {xy+z=52x3y2z=5xy+3z=3\left\{\begin{array}{rr}-x-y+z= & -5 \\ 2 x-3 y-2 z= & -5 \\ x-y+3 z= & 3\end{array}\right.

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