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Use addition or substitution to find the value of y for this set of equations. top line 2x - 3y = -15 bottom line x = 4y

Use addition or substitution to find the value of y for this set of equations. top line 2x - 3y = -15 bottom line x = 4y

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Bindi D. | Elementary, Middle School Math and Special Ed TeacherElementary, Middle School Math and Speci...
5.0 5.0 (11 lesson ratings) (11)
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Hi Amber,

try the methods that we all showed you in your previous questions. I can help you if you get stuck. To get you started try this

2x-3y=-15

x-4y = 0

hope this helps!

 

 

 

Nataliya D. | Patient and effective tutor for your most difficult subject.Patient and effective tutor for your mos...
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x = 4y ---> x - 4y = 0 Let's multiply this equation by (-2)
              -2x + 8y = 0 
              +     
               2x - 3y = - 15   
               0   + 5y = -15 ----> y = -3
x = 4 * (-3) -----> x = -12
 Answer:    (-12, -3)

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