July 2023 1 1 Report
Resuelve los siguientes sistemas de ecuaciones por el método de suma y resta
a) 2x + y = 16
5x – y = 24

b) 5x + 4y = 35
2x + 2y = 16

c) x + y = 21
3x + 7y = 107

d) X + y =15
X – y = 5

e) 4x +2y =36
2x + 2y = 22

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