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1. solve and explain how you got your answer 5x - 2y = 146x - 3y = 15

User Twilker
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1 Answer

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The given system of equations is expressed as

5x - 2y = 14

6x - 3y = 15

We would apply the method of elimination. We would make the coefficient of y to be equal in both equations by multiplying the first equation by 3 and the second equation by 2. It becomes

15x - 6y = 42

12x - 6y = 30

If we subtract the fourth equation from the third equation, it becomes

15x - 12x - 6y - - 6y = 42 - 30

3x - 6y + 6y = 12

3x = 12

x = 12/3

x = 4

Substituting x = 4 into the first equation, it becomes

5 * 4 - 2y = 14

20 - 2y = 14

2y = 20 - 14

2y = 6

y = 6/2

y = 3

To know if we are correct, we would substitute x = 4 and y = 3 into any of the equations. Substituting into the second equation, it becomes

6 * 4 - 3 * 3 = 15

24 - 9 = 15

15 = 15

This is correct

User Asif Vora
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