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Answer: [tex]\textsf{x = 2}[/tex]
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Given: [tex]\textsf{3x + 1 = 7}[/tex]
Find: [tex]\textsf{Solve for x}[/tex]
Solution: In order to isolate x we need to subtract 1 from both sides and the divide both sides by 3.
Subtract 1 from both sides
- [tex]\textsf{3x + 1 - 1 = 7 - 1}[/tex]
- [tex]\textsf{3x = 7 - 1}[/tex]
- [tex]\textsf{3x = 6}[/tex]
Divide both sides by 3
- [tex]\textsf{3x/3 = 6/3}[/tex]
- [tex]\textsf{x = 6/3}[/tex]
- [tex]\textsf{x = 2}[/tex]
Therefore, the value of x is equal to 2.
