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Mathematics 18 Online
OpenStudy (anonymous):

how do i solve this one it is longer

OpenStudy (anonymous):

\[50>7n+8>22\]

OpenStudy (anonymous):

@Michele_Laino

OpenStudy (freckles):

you want to get n alone there in the middle part

OpenStudy (freckles):

Try subtracting 8 first... And see if you can try to figure out the next step.

OpenStudy (anonymous):

i subtract 8 from 8 and 22 right

OpenStudy (freckles):

subtract 8 "from all sides" 50-8> 7n+8-8>22-8

OpenStudy (anonymous):

ok

OpenStudy (freckles):

can you show me the inequality you have now?

OpenStudy (anonymous):

i keep getting decimals

OpenStudy (freckles):

50-8 is not a decimal 8-8 is not a decimal 22-8 is not a decimal

OpenStudy (freckles):

if you take 8 away from 50 you are left with 42 if you take 8 away from 8 you are left with 0 if you take 8 away from 22 you are left with 14

OpenStudy (freckles):

\[50-8> 7n+8-8>22-8 \\ 42 > 7n > 14\]

OpenStudy (freckles):

last step is undo that multiplication of 7

OpenStudy (anonymous):

ok so i divide right

OpenStudy (anonymous):

\[6>n>2\]

OpenStudy (anonymous):

@freckles is it right

OpenStudy (freckles):

42 divided by 7 is 6 7 divided by 7 is 1 14 divided by 7 is 2 so yes 6>n>2 is right

OpenStudy (anonymous):

thanks

OpenStudy (freckles):

np

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