方程式系 ワークシート

3x + 7y = 47, x = 4 → y = ____

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

9x + 2y = 81, x = 7 → y = ____

x + y = 2, x − y = 0 → x = ____, y = ____

8x + 2y = 70, x = 8 → y = ____

x + y = 13, x − y = -5 → x = ____, y = ____

7x + 8y = 29, x = 3 → y = ____

x + y = 11, x − y = -3 → x = ____, y = ____

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

x + y = 11, x − y = 7 → x = ____, y = ____

6x + 1y = 35, x = 5 → y = ____

5x + 1y = 28, x = 4 → y = ____

x + y = 8, x − y = -4 → x = ____, y = ____

9x + 7y = 37, x = 1 → y = ____

5x + 8y = 43, x = 7 → y = ____

8x + 8y = 112, x = 6 → y = ____

1x + 8y = 53, x = 5 → y = ____

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

9x + 1y = 49, x = 5 → y = ____

5x + 3y = 8, x = 1 → y = ____