jacquezlewis79 jacquezlewis79

23-06-2016
Mathematics

contestada

what is the solution to this linear equation?

y-4x=7
2y+4x=2

Respuesta :

23-06-2016

You can solve for y in the first equation

y = 4x + 7

Plug 4x + 7 instead of y in the second equation

2(4x + 7) + 4x = 2

Solve for x

x = -1

Plug -1 for x

y - 4 * -1 = 7

y = 3

Solution: (-1, 3)

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