Seudónimo Seudónimo
  • 09-02-2021
  • Mathematics
contestada

solve by elimination
{10x-4y=-6
{-3x+4y=-1
WORK MUST BE SHOWN

Respuesta :

devishri1977
devishri1977 devishri1977
  • 09-02-2021

Answer:

x = -1

y = -1

Step-by-step explanation:

10x - 4y =  -6  ---------------------(I)

-3x + 4y =  -1 ---------------------(II)

Add equation (I) & (II) and y will be eliminated.

10x  - 4y = - 6

-3x  + 4y = -1       {Add}

7x           = - 7

         x = -7/7

x = -1

Plugin x =-1 in equation (I)

10*(-1) - 4y = -6

-10 - 4y = -6 {Add 10 to both sides}

     -4y = -6 + 10

     -4y = 4  {Divide both sides by (-4)}

         y = 4/(-4)

y = -1

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