Question

*Which of the following is not solution of equations 3x - 2y = 4 and 6x - 4y = 8?*

1️⃣ x = 5 and y = 3
2️⃣ x = 2 and y = 1
3️⃣ x = 6 and y = 7
4️⃣ x = 4 and y = 4​

Answer 1

1️⃣ x = 5 and y = 3

this is the answer for your question

Answer 2

1) x = 5 and y = 3 is not the solution of the equations.

To solve this question, substitute the values in each equation:

1. x = 5    y = 3

• Substituting x and y in first equation

           3 x 5 - 2 x 3

          = 15 - 6 = 11

• Substituting x and y in second equation

           6 x 5 - 4 x 3

           = 30 -12 =18

Thus, option 1 is not correct.

      2. x = 2   y = 1

• Substituting x and y in first equation

           3 x 2 - 2 x 1

          = 6 - 2 = 4

• Substituting x and y in second equation

           6 x 2 - 4 x 1

           = 12 - 4 = 8

Thus, option 2 is correct.

         3. x = 6   y = 7

• Substituting x and y in first equation

           3 x 6 - 2 x 7

          = 18 - 14 = 4

• Substituting x and y in second equation

           6 x 6 - 4 x 7

           = 36 - 28 = 8

Thus, option 3 is correct.

       4. x = 4   y = 4

• Substituting x and y in first equation

           3 x 4 - 2 x 4

          = 12 - 8 = 4

• Substituting x and y in second equation

           6 x 4 - 4 x 4

           = 24 - 16 = 8

Thus, option 4 is correct.

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