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blondinia [14]
3 years ago
8

9(4x - 3) -23x + 35 simplify for answer will give branliest

Mathematics
1 answer:
velikii [3]3 years ago
8 0

Answer:

13x+8

Step-by-step explanation:

9(4x-3) -23x+35

36x-27-23x+35

13x+8

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Solve the system by elimination.(show your work)
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Answer:

x = 1 , y = 1 , z = 0

Step-by-step explanation by elimination:

Solve the following system:

{-2 x + 2 y + 3 z = 0 | (equation 1)

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{-(2 x) + 2 y + 3 z = 0 | (equation 1)

0 x - 3 y - 2 z = -3 | (equation 2)

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0 x+3 y + 2 z = 3 | (equation 2)

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{-(2 x) + 2 y + 3 z = 0 | (equation 1)

0 x+3 y + 2 z = 3 | (equation 2)

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Swap equation 2 with equation 3:

{-(2 x) + 2 y + 3 z = 0 | (equation 1)

0 x+5 y + 6 z = 5 | (equation 2)

0 x+3 y + 2 z = 3 | (equation 3)

Subtract 3/5 × (equation 2) from equation 3:

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Multiply equation 3 by 5/8:

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{-(2 x) + 2 y + 3 z = 0 | (equation 1)

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Subtract 6 × (equation 3) from equation 2:

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0 x+0 y+z = 0 | (equation 3)

Divide equation 2 by 5:

{-(2 x) + 2 y + 3 z = 0 | (equation 1)

0 x+y+0 z = 1 | (equation 2)

0 x+0 y+z = 0 | (equation 3)

Subtract 2 × (equation 2) from equation 1:

{-(2 x) + 0 y+3 z = -2 | (equation 1)

0 x+y+0 z = 1 | (equation 2)

0 x+0 y+z = 0 | (equation 3)

Subtract 3 × (equation 3) from equation 1:

{-(2 x)+0 y+0 z = -2 | (equation 1)

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Divide equation 1 by -2:

{x+0 y+0 z = 1 | (equation 1)

0 x+y+0 z = 1 | (equation 2)

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Collect results:

Answer: {x = 1 , y = 1 , z = 0

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