How do you solve systems of equations but substitution? please help. - 7x - 2y = 13 \\ x - 2y = 11 y = 7x - 10 \\ y = - 3

asked Nov 5, 2019 41.3k views

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How do you solve systems of equations but substitution? please help.

$- 7x - 2y = 13 \\ x - 2y = 11$

$y = 7x - 10 \\ y = - 3$

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