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)。简单替换1.y = 3x + 5y = −x + 9简单替换2.y = −2x + 14y = 4x − 16简单替换3.y = x + 2y = −2x + 14简单替换4.y = −2x + 5y = −x + 3简单替换5.y = x − 3y = 4x − 24简单替换6.y = x + 1y = −x + 15简单替换7.y = −3x + 10y = 3x − 2简单替换8.y = −4x + 38y = 4x − 26简单替换9.y = 4x − 15y = 2x − 5简单替换10.y = 3x − 23y = x − 7简单替换11.y = 2x − 8y = 4x − 20简单替换12.y = −x + 9y = x − 7答案 — 方程组练习方程组1.(1, 8)2.(5, 4)3.(4, 6)4.(2, 1)5.(7, 4)6.(7, 8)7.(2, 4)8.(8, 6)9.(5, 5)10.(8, 1)11.(6, 4)12.(8, 1)由 Math Sheet Studio 制作 · mathsheetstudio.com — 免费可打印数学练习卷