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08-02-2022
Mathematics

contestada

solve the systme of equations using elimination
X+Y=2
X-Y=4

Respuesta :

08-02-2022

Answer:

x=3

y=-1

Step-by-step explanation:

x=4+y

by substitution it in equation 1

weget

(4+y)+y=2

4+2y=2

y=-1

x=3

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