cecole99 cecole99

19-06-2017
Mathematics

contestada

Use substitution to solve the system. y = 3x-4 4x-5y = −13

Respuesta :

20-06-2017

y=3x-4
4x-5y=-13
4x-5(3x-4)=-13
4x-15x+20=-13
-11x+20=-13
33=11x
x=3
y=3(3)-4
y=9-4
y=5

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