方程式系 ワークシート

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

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

8x + 9y = 60, x = 3 → y = ____

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

x + y = 12, x − y = 0 → x = ____, y = ____

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

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

3x + 1y = 26, x = 7 → y = ____

5x + 7y = 24, x = 2 → y = ____

1x + 2y = 15, x = 3 → y = ____

4x + 5y = 61, x = 9 → y = ____

x + y = 7, x − y = -3 → x = ____, y = ____

8x + 5y = 79, x = 8 → y = ____

9x + 3y = 54, x = 5 → y = ____

8x + 5y = 58, x = 6 → y = ____

8x + 8y = 80, x = 4 → y = ____

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

9x + 9y = 135, x = 8 → y = ____

x + y = 16, x − y = -2 → x = ____, y = ____

3x + 6y = 66, x = 6 → y = ____