方程式系 ワークシート

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

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

9x + 8y = 102, x = 6 → y = ____

5x + 5y = 60, x = 7 → y = ____

5x + 5y = 40, x = 7 → y = ____

2x + 9y = 15, x = 3 → y = ____

7x + 2y = 21, x = 1 → y = ____

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

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

3x + 5y = 21, x = 2 → y = ____

2x + 5y = 15, x = 5 → y = ____

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

5x + 9y = 42, x = 3 → y = ____

7x + 6y = 62, x = 8 → y = ____

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

9x + 6y = 78, x = 6 → y = ____

8x + 7y = 77, x = 7 → y = ____

7x + 4y = 47, x = 5 → y = ____

6x + 3y = 57, x = 6 → y = ____

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