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solve by substitution method 2x+y=-2 5x-2y=-23

Sagot :

Maandasidaelaidn

Step-by-step explanation:

  • SOLVED BY SUBSTITUTION !
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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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