Question

Find the value of k, if x=2,y=1 is a solution of the equation2x+3y=k

Answer 1

2 (2)+3(1)=k
4+3=k
k=7

Answer 2

X=2,Y=1
2X+3Y=k
2×2+3×1=k
4+3=k
7=k
K=7