Question

sandhya said 10,25 is the solution for x+2y=60 and 3x+4y=130 Do you accept her opinion? Give reasons ​

Answer 1

Answer:

no there are only 2 solutions of linear equations in two variable

reason :-

x+2y=60

x = 60 - 2y 1.

3x+4y=130

3(60 - 2y) + 4y = 130 (from equations 1)

180 - 6y + 4y = 130

180 - 130 = 6y - 4y

50 = 2y

y = 50/2

y = 25

x = 60 - 2y (equating the value of y in 1 equation )

x = 60 - 2*25

x = 60 - 50

x = 10

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