Solve the following systems of equations:
⇒ 2y + 3x = 9 ----- (1)
⇒ 4y + 9x = 21 ---- (2)
Multiplying eq1 by 2 and subtracting
⇒ 6x – 9x = 18 – 21
⇒ x = 1
Thus, 2y + 3 = 9
⇒ y = 2