Question

4x+3y=19,4x-3y=-11 answer =(k, 5) so k=?​

Answer 1

Answer:

The value of k is 1

Step-by-step explanation:

Put the coordinates (k,5) in any of the equation.Let I m putting the value of k in equation 4x+3y=19 so we'll get

4(k)+3(5)=19

4k+15=19

4k=19–15

k=1

Answer 2

4x+3y=19

x1=19-3y/4. eq.1

4x-3y=-11

x2=-11+3y/4. eq.2

put the value of x1 in eq.2

19-3y/4=-11+3y/4

19-3y=-11+3y

19+11=3y+3y

6y=30

y=30/6

y=5

put the value of y in eq.1

x=19-3y/4

x=19-3*5/4

x=19-15/4

x=4/4

x=1

x=1,y=5