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3 years ago

What does n equal in this equation? n-2=(10n+4)/2 (btw 10n+4 over 2)

1 answer:

6 0

N-2=(10n+4)/2
Multiply each side by 2
2(n-2)=10n+4
Expand the brackets
2n-4=10n+4
Subtract 4 from each side
2n-8=10n
Subtract 2n from each side
-8=8n
Divide each side by 8
-1=n

Hope this helped

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Answer:

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4 years ago

Read 2 more answers

Three erasers and five pencils cost $7.55. 6 erasers and 12 pencils cost $17.40. How much does 1 eraser cost? How much does 1 pe

Sphinxa [80]

Answer:

Step-by-step explanation:

erasers=e

pencils=p

3e+5p=7.55 ...(1)

6e+12p=17.40

divide by 2

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(2)-(1) gives

p=8.70-7.55=1.15

from (1)

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