方程式系 ワークシート

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

2x + 3y = 31, x = 5 → y = ____

6x + 1y = 55, x = 9 → y = ____

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

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

1x + 4y = 20, x = 4 → y = ____

9x + 8y = 119, x = 7 → y = ____

9x + 6y = 99, x = 9 → y = ____

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

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

4x + 9y = 75, x = 3 → y = ____

1x + 9y = 63, x = 9 → y = ____

1x + 6y = 46, x = 4 → y = ____

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

8x + 3y = 72, x = 6 → y = ____

6x + 5y = 17, x = 2 → y = ____

5x + 7y = 57, x = 3 → y = ____

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

8x + 9y = 103, x = 5 → y = ____

5x + 1y = 13, x = 1 → y = ____