Question

solve this as fast as you can (70 pt)

Answer 1

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Answer 2

Aɴꜱᴡᴇʀ

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Gɪᴠᴇɴ

To solve using Elimination method

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Tᴏ ꜰɪɴᴅ

X and Y of the given polynomials

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Fᴏʀᴍᴜʟᴀ Uꜱᴇᴅ

In the elimination method we eliminate that is subtract a variable and find its answer

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Sᴛᴇᴘꜱ

for question 1

$\sf{5x - 3y = 8 \: and \: 3x + y = 2 }$

$\sf{here \: let \: us \: cancel \: y}$

$\sf{so \: letsmultiply \: \: equation \: 2 \: with \: 3}$

$\sf{(5x - 3y = 8) - 3(3x + y = 2)}$

$\sf{(5x - 3y = 8) - ( - 9x - 3y = 2)} \\ \sf{14x = 6} \\ \sf{x = \frac{6}{14} } \\ \sf{x = \frac{3}{7} } \\ \sf{so \: y = 5( \frac{3}{7}) - 3y = 8 } \\ \sf{so \: y = \frac{8 - \frac{15}{7} }{3} } \\ \sf{which \: gives \: y = \frac{41}{21}}$

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