1 Answer

Cyndi · Answer 1 · 2017-06-07T20:32:27+0000

n-the number

-7 · n + 8 · (n + 1) = n - 7

-7n + 8(n + 1) = n - 7

solution:

-7n + 8n + 8 = n - 7

n + 8 = n - 7 |subtract n from both sides

8 = -7 FALSE

Answer: no solution ( n∈∅)

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