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  • Solve the following simultaneous equation 3x + 4y = 25, 5x - 6y = -9

Solve the following simultaneous equation 3x + 4y = 25, 5x - 6y = -9

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3x+4y=25 ...(1)

 
5x−6y=−9 ...(2)
Multiply (1) by 3 and (2) by 2

9x+12y=75

(+) 10x−12y =−18

19x=57

x=3​

Put x = 3 in (2)

5x−6y=−9

5(3)−64=−9

6y=15+9

6y=24

y=4​

 

Posted by

Deependra Verma

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