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Hello, I need help solving the system of equations by substitution method.

Thanks,

4x+2y=108
x=-5y

Sagot :

4(-5y) + 2y = 180

-20y + 2y = 180

-18y = 180

y = -10
x = 50
Panoyin
4x + 2y = 108
x = -5y

4(-5y) + 2y = 108
-20y + 2y = 108
-18x = 108
 -18     -18
     x = 6
4(6) + 2y = 108
  24 + 2y = 108
- 24           - 24
           2y = 84
            2      2
             y = 41
        (x, y) = (6, 41)
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