方程式系 ワークシート

1x + 5y = 17, x = 2 → y = ____

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

x + y = 11, x − y = 5 → x = ____, y = ____

2x + 3y = 31, x = 8 → y = ____

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

1x + 2y = 14, x = 4 → y = ____

1x + 9y = 31, x = 4 → y = ____

5x + 6y = 37, x = 5 → y = ____

4x + 4y = 60, x = 7 → y = ____

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

2x + 7y = 25, x = 9 → y = ____

5x + 6y = 72, x = 6 → y = ____

2x + 8y = 28, x = 2 → y = ____

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

8x + 7y = 31, x = 3 → y = ____

4x + 8y = 40, x = 8 → y = ____

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

1x + 7y = 33, x = 5 → y = ____

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

4x + 5y = 22, x = 3 → y = ____