radomes.openskiesproject.org
kira18 kira18
  • 25-08-2014
  • Mathematics
Answered

y=-5

5x+4y=-20

it say solve by substitution

Verified Answer :

angelgirltori
angelgirltori angelgirltori
  • 25-08-2014

5x + (4 · -5) = -20 
5x - 20 = -20 
5x = 0
x = 0

Answer Link
Lilith
Lilith Lilith
  • 25-08-2014

\(y=-5\\5x+4y=-20 \\\\5x+4 \cdot (-5)=-20 \\\\5x-20=-20\ \ | \ add\ 20\ to\ both\ sides \\\\5x=0 \ \ | \ divide \ both \ sides\ by\ 5\\\\x=0\)


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