15n + 24 - 4(n - 3) + 6 - 2n = 105
2 answers:
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Work in the picture:
Work in the picture:
Hey there!
This can be written as
This is in form of
, it can be expanded as 
=> (n-7)(n+7)=0
=> n -7 = 0 or n + 7 = 0
=> n = 7 or n = -7
So option 7 , -7 are correct.
Hope this is clear :)
Have a good day:)
This can be written as
This is in form of
=> (n-7)(n+7)=0
=> n -7 = 0 or n + 7 = 0
=> n = 7 or n = -7
So option 7 , -7 are correct.
Hope this is clear :)
Have a good day:)