方程式系 ワークシート

4x + 7y = 47, x = 3 → y = ____

7x + 5y = 39, x = 2 → y = ____

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

3x + 8y = 79, x = 5 → y = ____

x + y = 4, x − y = 0 → x = ____, y = ____

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

9x + 8y = 112, x = 8 → y = ____

9x + 7y = 65, x = 1 → y = ____

3x + 6y = 21, x = 5 → y = ____

6x + 3y = 39, x = 4 → y = ____

2x + 1y = 9, x = 2 → y = ____

6x + 6y = 90, x = 7 → y = ____

9x + 1y = 32, x = 3 → y = ____

x + y = 7, x − y = -5 → x = ____, y = ____

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

9x + 3y = 102, x = 9 → y = ____

x + y = 14, x − y = 4 → x = ____, y = ____

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

7x + 9y = 89, x = 5 → y = ____

2x + 5y = 40, x = 5 → y = ____