Question

Find the value of (x-y)if 3x+4y=11

Answer 1

Answer:

(x-y) = -1

Step-by-step explanation:

by trial and error method if (x,y) =(1,2) then the equation is satisfied

how is first put the x,y in the equation so that

3x+4y= 11

3(1)+4(2)=11

3+8=11

11=11

therefore L.H.S =R.H.S

now pur x,y in x-y eq so that

x-y= 1-2= -1