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5x+3y=25 and 3x+4y=26 solve by substitution!
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5x+3y=25 and 3x+4y=26 solve by substitution!

User DavidG
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5x + 3y = 25 \\ 5x = 25 - 3y \\ x = (25 - 3y)/(5) \\ x = (25)/(5) - (3y)/(5) \\ x = 5 - (3y)/(5) \\ 3x + 4y = 26 \\ 3 (5 - (3y)/(5) ) + 4y = 26 \\ 15 + (11y)/(5) = 26 \\ (11y)/(5) = 26 - 15 \\ (11y)/(5) = 11 \\ (5)/(11) * (11y)/(5) = 11 * (5)/(11) \\ y = 5 \\ x = 5 - (3y)/(5) \\ x = 5 - (3(5))/(5) \\ x = 2

(x,y)—> (2,5)

User Hitesh Somani
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