dinodan dinodan

03-11-2016
Mathematics

contestada

Solve the system using elimination

x + 2y = 1
4x + y = 11

Respuesta :

03-11-2016

x + 2y = 1 ______×1
4x + y = 11 _____ ×2

x + 2y = 1
8x + 2y = 22

8x + 2y = 22
(-)
x + 2y = 1
_____________
7x = 21

x = 3

3 + 2y = 1
2y = 2
y = 1

i am a mathematics teacher. if anything to ask please pm me

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