Respuesta :

WhiteWinterRose

-3x+y = -28

-x-6y = -3

~~~~~~~~~~~~~

Eliminate x:

-3x+y=-28

-x-6y=-3

~~~~~~~~~~~~~

-3x+y=-28

-3(-1)x-3(-6)y=(-3)(-3)

~~~~~~~~~~~~~

3x-1y=28

3x+18y=9

19y=-19

Therefore:

19y=-19

÷19   ÷19

y=[tex]\frac{-19}{19}[/tex]

y=1

~~~~~~~~~~~~~

3x-1y=28

y=-1

~~~~~~~~~~~~~

3x-1(-1)=28

3x+1=28

    -1    -1

3x=28-1

3x=27

÷3  ÷3

x=[tex]\frac{27}{3}[/tex]

↑ They cancel each other out

x=9

~~~~~~~~~~~~~

x=9

y=-1

Answer is: (9,-1)

Answer:

X=9, y=-1

Explanation:

Multiply 2nd equation by -3 so you can eliminate x

-3(-x-6y)=-3(-3)

3x+18y=9

add first equation to modified second equation:

       -3x+y=-28

        3x+18y=9

Solve.  19y=-19

               Y=-1

Find x by substituting y value into either equation:

-3x+y=-28

-3x+-1=-28

-3x=-27

x-9

check answer by substituting x and y values into either equation.

-3x+y=-28

-3(9)+-1=-28

-27-1=-28

-28=-28

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