If , then find x.
We are given that,
We need to find the value of x.
We know by the property of matrices,
This implies,
a11 = b11, a12 = b12, a21 = b21 and a22 = b22
So, if we have
Corresponding elements of two elements are equal.
That is,
2x + y = 6 …(i)
3y = 0 …(ii)
To solve for x, we have equations (i) and (ii).
We can’t solve for x using only equation (i) as equation (i) contains x as well as y. We need to find the value of y from equation (ii) first.
From equation (ii),
3y = 0
⇒ y = 0
Substituting y = 0 in equation (i),
2x + y = 6
⇒ 2x + (0) = 6
⇒ 2x = 6 – 0
⇒ 2x = 6
⇒ x = 3
Thus, we get x = 3.