方程式系 ワークシート

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

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

1x + 5y = 49, x = 4 → y = ____

3x + 1y = 36, x = 9 → y = ____

8x + 7y = 120, x = 8 → y = ____

1x + 2y = 8, x = 2 → y = ____

6x + 4y = 70, x = 7 → y = ____

9x + 9y = 72, x = 6 → y = ____

3x + 8y = 70, x = 2 → y = ____

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

2x + 5y = 38, x = 9 → y = ____

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

9x + 1y = 86, x = 9 → y = ____

7x + 5y = 49, x = 2 → y = ____

x + y = 4, x − y = 2 → x = ____, y = ____

6x + 5y = 77, x = 7 → y = ____

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

x + y = 6, x − y = 4 → x = ____, y = ____

8x + 7y = 71, x = 8 → y = ____

x + y = 8, x − y = 6 → x = ____, y = ____