方程式系 ワークシート

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

9x + 1y = 51, x = 5 → y = ____

x + y = 6, x − y = 2 → x = ____, y = ____

x + y = 16, x − y = 0 → x = ____, y = ____

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

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

7x + 6y = 61, x = 7 → y = ____

x + y = 9, x − y = -7 → x = ____, y = ____

9x + 9y = 117, x = 6 → y = ____

7x + 2y = 47, x = 5 → y = ____

x + y = 8, x − y = -2 → x = ____, y = ____

3x + 4y = 39, x = 5 → y = ____

x + y = 11, x − y = -3 → x = ____, y = ____

9x + 8y = 69, x = 5 → y = ____

x + y = 14, x − y = 4 → x = ____, y = ____

8x + 2y = 14, x = 1 → y = ____

4x + 2y = 26, x = 3 → y = ____

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

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

7x + 3y = 59, x = 5 → y = ____