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In which line is a mistake first made when solving the following system of equations by elimination for x? 5x + 3y = 12 4x - 5y = 17


Line 1

25x + 15y = 60

4x - 5y = 17


Line 2

25x + 15y = 60

20x - 15y = 85


Line 3

45x = 145


Line 4

x = 29/9

Verified Answer :

jhonyy9
  • in the second line bc. the second equation we need multiplie just by 3 and ot by 5 
    - so there above was multiplied by 5 and so than 5*(-5y) not equal -15y so this is equal -25y

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