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Sliva [168]
4 years ago
6

Solve for x . X+9 .. 2x-3 .

Mathematics
1 answer:
nadezda [96]4 years ago
6 0
X + 9 = 2x - 3
<u>-x         -x        </u>
     9 = x - 3
<u>   +3       +3</u>
   12 = x
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Answer:

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Step-by-step explanation:

{x + 4 y = 18 | (equation 1)

{x + 8 y = 38 | (equation 2)

Subtract equation 1 from equation 2:

{x + 4 y = 18 | (equation 1)

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Divide equation 2 by 4:

{x + 4 y = 18 | (equation 1)

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Subtract 4 × (equation 2) from equation 1:

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{0 x+y = 5 | (equation 2)

Collect results:

Answer:  {x = -2 ,  y = 5

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