If four points A, B, C and D with position vectors 4i^+3j^+3k^, 5i^+ xj^+ 7k^, 5i^+3j^ and 7i^ + 6j^ + k^ respectively are coplanar, then find the value of x.

If four points A, B, C and D with position vectors 4i^+3j^+3k^, 5i^+ x

1.	If four points A, B, C and D with position vectors 4i^+3j^+3k^, 5i^+ xj^+ 7k^, 5i^+3j^ and 7i^ + 6j^ + k^ respectively are coplanar, then find the value of x.
Answer» If four points A, B, C and D with position vectors 4 $\hat{i} +$ 3 $\hat{j} +$ 3 $\hat{k}$ , 5 $\hat{i} +$ $x \hat{j} +$ 7 $\hat{k}$ , 5 $\hat{i} +$ 3 $\hat{j}$ and $7 \hat{i} + 6 \hat{j} + \hat{k}$ respectively are coplanar, then find the value of x.