Question

metodo de sustitucion
3x+2y=-7
5x-2y=5​

Answer 1

3X + 2Y=-7

5X - 2Y=5            Acá se cancelan las Ys

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8X=-2

X=-1/4

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3(1/4) + 2Y= -7

2Y= 3/4-7

2Y= -25/4

Y=-25/8