Solve the following systems of equations:
⇒ 3x + 7y = 105
⇒ 9x – 2y = 108
Multiplying eq1 by 3 and subtracting eq2 from it
⇒ 9x + 21y – 9x + 2y = 315 – 108
⇒ 23y = 207
⇒ y = 9
Thus, 9x – 18 = 108
⇒ x = 14
6
Solve the following systems of equations:
⇒ 3x + 7y = 105
⇒ 9x – 2y = 108
Multiplying eq1 by 3 and subtracting eq2 from it
⇒ 9x + 21y – 9x + 2y = 315 – 108
⇒ 23y = 207
⇒ y = 9
Thus, 9x – 18 = 108
⇒ x = 14