5926008032 5926008032
  • 23-05-2021
  • Mathematics
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Solve by Substitution

Solve by Substitution class=

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sreedevi102
sreedevi102 sreedevi102
  • 23-05-2021

Answer:

[tex]-9x-10y=12 \ -----(1)\\\\-3x+3=y \ ------(2)\\\\substitute \ y \ in \ (1)\\\\-9x -10(-3x+3) =12\\\\-9x+30x-30=12\\\\21x= 12+30\\21x=42\\x=2\\\\\\substitute \ x \ in \ (2)\\-3\cdot 2+3=y\\-6+3=y\\y=-3[/tex]

x= 2, y = -3

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8555cashio
8555cashio 8555cashio
  • 23-05-2021
x= 2 and y= -3
Just substitute the value of y into the first equation add like terms and solve
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