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Solve the system of equations 3x = 84 - 2y 9x = 8y - 24

Solve the system of equations 3x = 84 - 2y 9x = 8y - 24
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Solve the system of equations 3x = 84 - 2y 9x = 8y - 24

User JLagana
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Answer:


3x = 84 - 2y - - - (i) \\ 9x = 8y - 24 - - - - (ii) \\ from \: (ii) \\ 3(3x) = 8y - 24 \\ but \: from \: (i) \: \: 3x = 84 - 2y \\ hence \: put \: (i) \: in \: (ii) \\ 3(84 - 2y) = 8y - 24 \\ 252 - 6y = 8y - 24 \\ 276 = 14y \\ y = (138)/(7) \\ x = (104)/(7)

User Anjum Sayed
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