marianaalvarez173
marianaalvarez173 marianaalvarez173
  • 28-08-2020
  • Mathematics
contestada

5x+ 4y = -20
5x + 12y = -10
HELPPPPPP

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victorbanjo1212 victorbanjo1212
  • 28-08-2020

Answer:

We are to find x and y in this equation.

5x+4y= -20.

- 5x+12y= -10.

which is y=5/4 or 1.25.

then substitute y=1.25 into eqtn I.

5x+4(1.25)=-20.

5x+5= -20.

5x=-20-5.

5x= -25.

x= -5.

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