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Question:

The number −6 is 2 more than an unknown number. Find the unknown number.

A -8
Explaination

Translate the words into an equation. Let x represent the unknown number.
-6 is 2 more than an unknown number
-6 = 2 + x
To isolate x, subtract 2 from both sides.
- 6 - 2 = x
Simplify both sides.
-8 = x
The unknown number is -8.