ptvfaby1
ptvfaby1 ptvfaby1
  • 02-11-2020
  • Mathematics
contestada

4x + 5y = 7
3x -2y =-12
Multiply each equation by a number that produces opposite coefficients for x or y.

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tinyarie
tinyarie tinyarie
  • 02-11-2020
Not sure if I’m understanding this wrong but for x you can multiply the top equation by -3 to get -12x-15y=-21 and the bottom by 4 to get 12x-8y=-48.
For y you can multiply the top equation by 2 to get 8x+10y=14 and the bottom equation by 5 to get 15x-10y=-60
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