姓名 ______________________日期 ____________得分 ____ / 12
方程组练习
方程组 · 1–12
解每个方程组。把解写成 (x, y)。
1.x + 6y = 35−4x + 4y = 28
2.−4x + y = −234x − 4y = 20
3.2x − 6y = 40−6x − y = −6
4.−2x − 6y = 245x + 4y = −5
5.6x − 5y = 45−4x + y = −23
6.−3x − 5y = −36−6x − 2y = −24
7.−2x − 2y = −23x + 4y = −2
9.−5x + y = 13−4x + 4y = 4
10.3x + 4y = 15x − 5y = −14
11.−x + y = −35x − 6y = 15
12.−6x − 4y = −42x − 5y = −5
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