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what is 3x-8=-17

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Alexei M. | Patient, Knowledgeable Arts and Science TutorPatient, Knowledgeable Arts and Science ...
4.6 4.6 (7 lesson ratings) (7)
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3x = 8 - 17
 
3x = -9
 
x = -3
Jacoby B. | Math, Science and Test Prep TutorMath, Science and Test Prep Tutor
5.0 5.0 (156 lesson ratings) (156)
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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