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Sagot :
Answer:
x= -3
Step-by-step explanation:
2x + y = -2 ---> y = -2 - 2x
instead: 5x-2y = -23 ---> 5x - 2(-2 -2x) = -23 ----> 5x+4+4x= -23 ---> 9x= -27
---> x = -3
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