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19-12-2016
Mathematics

contestada

What is the solution of the system using the substitution method?

y + 7 = 3x
6x - 2y = 12

Respuesta :

19-12-2016

Substitute y = 3x - 7 for y in the second equation.

6x - 2(3x - 7) = 12

6x - 6x + 14 = 12

14 = 12? Incorrect. That means no solution.

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