July 2023 1 6 Report
Ayuda tengo 1 hora para entregarla. doy 25 puntos !!!!

x+y=20
3x-2y=20
—————

x+2y=5
x-y=5
—————

7(2x+y=3)
3x-7y=30
——————

3x-2y=12
x+y= -1
——————

x+y=22
x-2y=1
——————

2x+y=3
-3x-2y= -2
——————

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