Question

find the values of a if x=2,y=1;in a solution of the equation 3x-y=9
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please give full step by step
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Answer 1

Step-by-step explanation:

Given,

2x+y=9--------------------------(1)

3x−y=6--------------------------(2)

Adding eq

n

(1) and eq

n

(2)

2x+y=9 + (3x−y=6) =9+6

x=

5

15

​

=3

We get, x=3

Answer 2

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