方程式系 ワークシート

5x + 8y = 99, x = 7 → y = ____

7x + 3y = 67, x = 7 → y = ____

5x + 4y = 47, x = 3 → y = ____

2x + 7y = 49, x = 7 → y = ____

1x + 2y = 15, x = 1 → y = ____

x + y = 9, x − y = 1 → x = ____, y = ____

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

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

6x + 5y = 76, x = 6 → y = ____

1x + 3y = 25, x = 1 → y = ____

x + y = 11, x − y = -1 → x = ____, y = ____

3x + 8y = 67, x = 9 → y = ____

1x + 8y = 47, x = 7 → y = ____

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

8x + 2y = 32, x = 2 → y = ____

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

2x + 6y = 30, x = 3 → y = ____

x + y = 10, x − y = -2 → x = ____, y = ____

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

1x + 3y = 30, x = 6 → y = ____