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10-12-2019
Mathematics

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solve the systems of equation by substitution method.

2x+y=1
3x-y=4

Respuesta :

Yang100 Yang100

10-12-2019

Answer:

x=1, y=-1. (1, -1).

Step-by-step explanation:

2x+y=1

3x-y=4

-------------

y=3x-4

2x+3x-4=1

5x-4=1

5x=1+4

5x=5

x=5/5

x=1

y=3(1)-4=3-4=-1

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