December 2023 1 9 Report
RESUELVAN ESTOS EJERCICIOS...

d) x + y = 12
x – y = 10

e) x + 3y = 29
2y – x = 11

f) x – y = 15
-x + 3y = 7

g) –x + 9x = 17
x – 5y = 7 10

h) 3x + 4y = –5
–3x – 2y = –7

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