方程式系 ワークシート

5x + 3y = 31, x = 2 → y = ____

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

4x + 1y = 13, x = 3 → y = ____

x + y = 9, x − y = -5 → x = ____, y = ____

6x + 8y = 56, x = 4 → y = ____

9x + 3y = 30, x = 2 → y = ____

5x + 7y = 39, x = 5 → y = ____

x + y = 8, x − y = 2 → x = ____, y = ____

6x + 3y = 75, x = 9 → y = ____

x + y = 14, x − y = 0 → x = ____, y = ____

x + y = 13, x − y = 1 → x = ____, y = ____

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

9x + 3y = 75, x = 8 → y = ____

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

8x + 7y = 60, x = 4 → y = ____

6x + 9y = 63, x = 9 → y = ____

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

2x + 2y = 14, x = 5 → y = ____

7x + 7y = 28, x = 1 → y = ____

x + y = 6, x − y = 0 → x = ____, y = ____