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14-08-2018
Mathematics

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what is the sum of these two equations ? 2x+3y-z=5, x+3y+2z=-6

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14-08-2018

We just add the left side to the left side, the right side to the right side and equate the result:

2x + 3y -z + x + 3y + 2z = 5 + -6

3x + 6y + z = -1

Answer: 3x + 6y + z = -1

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