2. 职称英语
  3. 3x-y = 18 4x = 24 - 6yx=6y=0The first step is rearranging the equations to alig

3x-y = 18 4x = 24 - 6yx=6y=0The first step is rearranging the equations to alig

游客2024-01-12  41
问题 3x-y = 18 4x = 24 - 6y
选项
答案 x=6
y=0
解析 The first step is rearranging the equations to align like terms:
3x - y=18
4x + 6y = 24
Multiply the top equation by 6 and add the equations:
18x - 6y = 108
4x + 6y = 24
22x = 132
x =6
Now choose one of the original equations, substitute 6 in for x, and solve fory:
3(6)-y= 18
18 -y= 18
-y=0
y=0
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