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what is 3x-8=-17

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2 Answers

3x = 8 - 17
3x = -9
x = -3
Inverse Order of Operations. Whatever we do to one side we must do to the other as it relates to operations. We want to undo all operations that are present in order to solve for the variable.
Subtract a positive 8 from both sides this gives you: 
3x = -9 
divide 3 from both sides, we get: 
x = -3