5 + 3n = -10 + 8n 15 = 5n (add 10-3n to both sides) 3 = n

##### The number is 3.

__Check__5 + 3*3 = -10 + 8*3 5 + 9 = -10 + 24 14 = 14 (yes)actually to be certain the awnser is x=23

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