Question

solve 2x+y=11
x+y=8by cross multiplication method
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Answer 1

Answer:

solved.............

Answer 2

Answer:

x = 3 and y = 5

Step-by-step explanation:

2x + y = 11 x + y = 8

2x + y - 11 = 0 x + y - 8 = 0

By cross multiplication method :

x - y 1

-------- = --------- = ------

1 - 11 2 - 11 2 1

1 - 8 1 - 8 1 1

x - y 1

--------- = ---------- = ---------

- 8 + 11 - 16 + 11 2 - 1

x - y 1

----- = ----- = -----

3 - 5 1

x 1 - y 1

----- = ----- ----- = -----

3 1 - 5 1

x = 3 - y = - 5

y = 5