mayajewel2017 mayajewel2017

18-12-2020
Mathematics

contestada

solve the system of equations X-Y = -12 and -8x-4y=-12 by combining the equations

Respuesta :

clarch19 clarch19

26-12-2020

Answer:

x = -3

y = 9

Step-by-step explanation:

you can add the equations after multiplying the first one by 8

8x - 8y = -96 added to -8x - 4y = -96

'x' eliminated; -12y = -108; y = 9

Solve for 'x':

x - 9 = -12

x = -12 + 9

x = -3

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