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AveGali [126]
3 years ago
7

Solve for y. x y + p = 9 A) x(9-p) B) (p-9)/x C) (9-p)/x

Mathematics
1 answer:
Kamila [148]3 years ago
7 0
<span>x y + p = 9 
subtract p on both sides
xy + p - p = 9 - p
simplify
xy = 9 - p
divide both sides by x
xy/x = (9-p)/x
simplify
y = (9 - p)/x

Answer
</span><span>C) (9 - p)/x</span>
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1/5

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Step-by-step explanation:

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Step-by-step explanation:

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Express the system in standard form:

{-(7 x)/5 + y = -5 | (equation 1)

{-(3 x)/5 + y = -1 | (equation 2)

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Multiply equation 1 by 5:

{-(7 x) + 5 y = -25 | (equation 1)

{0 x+(4 y)/7 = 8/7 | (equation 2)

Multiply equation 2 by 7/4:

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

Subtract 5 × (equation 2) from equation 1:

{-(7 x)+0 y = -35 | (equation 1)

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Collect results:

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(REFER TO CHART BELOW)

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Answer:

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