Question

solve the lenier equation and find the value of x
x=3/2=2x

Answer 1

Answer:

WER

Given equations are

x+y=3

2x+5y=12

Since, the system has unique solution at x=x

1

and y=y

1

That means the lines intersect at only one point (x

1

,y

1

)

By putting x=x

1

and y=y

1

in equations, we get

x

1

+y

1

=3 ....(1)

2x

1

+5y

1

=12 ....(2)

From equation (1), we have

y

1

=3−x

1

Putting the value of y

1

in equation (2),

⇒2x

1

+5(3−x

1

)=12

⇒2x

1

+15−5x

1

=12

⇒2x

1

−5x

1

=12−15

⇒−3x

1

=−3

⇒x

1

=

−3

−3

⇒x

1

=1