1.

3) Solve the following sets of simultaequations.x+y=4; 2x-5y-1

Answer»

x + y = 4 .....(1)

2x - 5y = 1 ......(2)

5 × (1) + (2)

7x = 21

x = 3

So, y = 4 - 3 = 2



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