方程式系 ワークシート

x + y = 18, x − y = 0 → x = ____, y = ____

x + y = 15, x − y = -1 → x = ____, y = ____

x + y = 9, x − y = 3 → x = ____, y = ____

x + y = 7, x − y = 5 → x = ____, y = ____

x + y = 13, x − y = -3 → x = ____, y = ____

9x + 6y = 66, x = 2 → y = ____

x + y = 4, x − y = 0 → x = ____, y = ____

8x + 7y = 57, x = 1 → y = ____

x + y = 14, x − y = 2 → x = ____, y = ____

x + y = 11, x − y = 1 → x = ____, y = ____

4x + 4y = 40, x = 7 → y = ____

2x + 2y = 12, x = 1 → y = ____

2x + 5y = 29, x = 2 → y = ____

6x + 2y = 54, x = 8 → y = ____

2x + 7y = 49, x = 7 → y = ____

6x + 2y = 44, x = 7 → y = ____

4x + 8y = 84, x = 3 → y = ____

3x + 7y = 55, x = 2 → y = ____

x + y = 15, x − y = -3 → x = ____, y = ____

x + y = 3, x − y = -1 → x = ____, y = ____