参考号：EM131023446

1.确定图形时线是否会垂直。

3x -2y = 6
2x + 3y = 6

2.爱丽丝的餐厅共有205个席位。非吸烟部分中的座位数量是吸烟区中座位数的两倍的两倍。每个部分中有多少个座位？

3.通过替换方法求解方程系统

x + 3y = 32
-3x + 2y = 3

4.解决方程系统

x + y = 5
X -y = -9

5. Ricks Paint Store sells a special shade of pink paint (Ricky's Blush) which can be made from red paint and white paint. The amount of red paint should be three times the amount of white paint. How much of each kind of paint is needed to make 264 gallons of Ricky's Blush?

分配期望：

定义方程系统。

求解具有两个和三个变量的方程式系统。