Q. 3 C4.8( 5 Votes )

# Attempt any three

3x-y = 7 ………….(1)

X + 4y = 11

Multiplying both sides by 3

3(x + 4y) = 3×11

3x + 12y = 33 ……………….(2)

Subtracting (2)-(1)

(3x + 12y)-(3x-y) = 33-7

13y = 26

y = 2

Putting the value of y in (1)

3x-y = 7

3x-(2) = 7

3x = 9

x = 3.

The solution of equations is x = 3 and y = 2.

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