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destinee7
destinee7 destinee7
  • 30-01-2017
  • Mathematics
Answered

-2x+y=-4

X=-y+5




2x+y=20

6x-5y=12

Verified Answer :

Jessicaremilus
Jessicaremilus Jessicaremilus
  • 30-01-2017

the 3 one
Simplifying
2x + -1y = 20

 Solving

2x + -1y = 20
  Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add 'y' to each side of the equation.
 2x + -1y + y = 20 + y
  Combine like terms: -1y + y = 0
2x + 0 = 20 + y
2x = 20 + y

Divide each side by '2'.
x = 10 + 0.5y
  Simplifying
x = 10 + 0.5y

Answer Link

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