方程式系 ワークシート

7x + 9y = 57, x = 3 → y = ____

x + y = 7, x − y = 3 → x = ____, y = ____

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

x + y = 11, x − y = 7 → x = ____, y = ____

6x + 7y = 13, x = 1 → y = ____

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

x + y = 9, x − y = -5 → x = ____, y = ____

x + y = 10, x − y = 8 → x = ____, y = ____

x + y = 16, x − y = -2 → x = ____, y = ____

8x + 5y = 86, x = 7 → y = ____

7x + 2y = 11, x = 1 → y = ____

x + y = 5, x − y = -1 → x = ____, y = ____

x + y = 7, x − y = 1 → x = ____, y = ____

x + y = 13, x − y = -1 → x = ____, y = ____

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

x + y = 7, x − y = -3 → x = ____, y = ____

6x + 7y = 89, x = 9 → y = ____

6x + 9y = 45, x = 6 → y = ____

8x + 6y = 54, x = 3 → y = ____

3x + 8y = 30, x = 2 → y = ____