方程式系 ワークシート

1x + 7y = 50, x = 1 → y = ____

x + y = 12, x − y = -4 → x = ____, y = ____

1x + 5y = 17, x = 7 → y = ____

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

3x + 9y = 108, x = 9 → y = ____

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

x + y = 17, x − y = -1 → x = ____, y = ____

7x + 6y = 98, x = 8 → y = ____

3x + 2y = 28, x = 8 → y = ____

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

8x + 9y = 66, x = 6 → y = ____

9x + 4y = 38, x = 2 → y = ____

x + y = 8, x − y = 4 → x = ____, y = ____

1x + 7y = 31, x = 3 → y = ____

7x + 8y = 111, x = 9 → y = ____

4x + 2y = 40, x = 7 → y = ____

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

4x + 7y = 57, x = 9 → y = ____

x + y = 12, x − y = -6 → x = ____, y = ____

9x + 9y = 36, x = 2 → y = ____