3 years ago

Urgent Help Please High Reward!

Mathematics

2 answers:

cestrela7 [59]3 years ago

7 0

Answer:

n =7

Step-by-step explanation:

(n+1) +1 + (n-1) = value first row

3+ (2n-9) +n = value second row

The value has to be the same

Set the equations equal

(n+1) +1 + (n-1) =3+ (2n-9) +n

Combine like terms

2n+1 = 3n-6

Subtract 2n from each side

2n+1-1 -2n = 3n-6-2n

1 = n-6

Add 6 to each side

1+6 = n-6+6

7 = n

boyakko [2]3 years ago

3 0

Answer:

n =7

Step-by-step explanation:

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