方程式系 ワークシート

7x + 6y = 81, x = 9 → y = ____

3x + 6y = 24, x = 2 → y = ____

1x + 8y = 38, x = 6 → y = ____

x + y = 17, x − y = 1 → x = ____, y = ____

7x + 9y = 75, x = 3 → y = ____

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

x + y = 10, x − y = 6 → x = ____, y = ____

9x + 3y = 33, x = 3 → y = ____

x + y = 12, x − y = -6 → x = ____, y = ____

1x + 3y = 17, x = 2 → y = ____

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

1x + 4y = 12, x = 8 → y = ____

5x + 5y = 45, x = 4 → y = ____

x + y = 4, x − y = 2 → x = ____, y = ____

3x + 1y = 12, x = 1 → y = ____

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

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

8x + 8y = 72, x = 8 → y = ____

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

6x + 5y = 47, x = 2 → y = ____