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iragen [17]
3 years ago
15

X - 2y = 83x = 19 + 4yhow to answer this through elimination or substitution method?​

Mathematics
1 answer:
adell [148]3 years ago
4 0

Answer:

The solution of the given equations

x = 3 and y =-2.5

Step-by-step explanation:

<u><em>Step(i):-</em></u>

  x - 2y = 8 ..(i)

3x = 19 +4y ..(ii)

By using substitution method

substituting  x = 2y +8 in equation (ii)

 ⇒  3( 2y +8) = 19 +4y

⇒   6y +24 = 19 +4y

⇒  6 y - 4y = 19 - 24

⇒   2 y = -5

   y = \frac{-5}{2} = -2.5

<u><em>Step(ii):-</em></u>

Substitute 'y' = -2.5 in equation (i) , we get

         x - 2y = 8

   ⇒  x - 2( \frac{-5}{2}) =8

  ⇒  x = 8 -5

      x = 3        

<u><em>Final answer:-</em></u>

The solution of the given equations

x = 3 and y =-2.5

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