Question

Método de sustitución
3x-y=19
X+4y=-11
Ayudenme

Answer 1

3x-y=19
X+4y= -11

x=-11-4y

3(-11-4y)-y=19
-33-12y-y=19
-13y=52
y= -4

x= -11-4(-4)
x= -11+16
x=5

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