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  3. 3x-y= 18 4x=24-6y The first step is rearranging the equations to align lik

3x-y= 18 4x=24-6y The first step is rearranging the equations to align lik

游客2024-01-12  77
问题 3x-y= 18      4x=24-6y
选项
答案  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:
[*]
   Now choose one of the original equations, substitute 6 in for x, and solve for y:
   3(6)-y=18
     18-y=18
       -y=0
        y=0
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