antwoneishawillis156 antwoneishawillis156

18-09-2018
Mathematics

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y=-2x+6
3y-x+3=0
Solving systems using substitution

Respuesta :

18-09-2018

You can "plug in" the value for y from the top eq in the bottom one:

3(-2x+6) - x + 3 = 0

Simplify:

-6x + 18 - x + 3 = 0

-7x + 21 = 0

-7x = -21

x = 3

y = -2*3+6 = 0

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