May 2023 1 9 Report
RESOLVER POR SUSTITUCIÓN

1) x+ 3y=6
5x -2y= 13

2) 5x+7y=-1
-3x+4y=-24

3) 3x+4y=8
8x-9y=-77

4) x-5y =8
-7x+8y=25


5) 15x+11y=32
-9x+7y=8

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