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10-02-2017
Mathematics

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5.Solve the system using substitution.
y-2x=3
3x-2y=5
A.(-1/2,2)
B.(2,7)
C.(-8,-13)
D.(-11,-19)

Respuesta :

abroderick2020 abroderick2020

11-02-2017

y-2x=3
3x-2y=5

y=3+2x
3x-2y=5

3x-2(3+2x)=5

3x-6-6x=5

3x-6x=11

-3x=11

x=-3.6

y=3+2(-3.6)

y=3-7.2

y=-4.2

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