Hello!
Answer:

Explanation:
We want to solve this inequation:

◼ Subtract 3x from both sides:

◼ Simplify both sides:

◼ Subtract 7 from both sides:

◼ Simplify both sides:

◼ Divide both sides by 2:

◼ Simplify both sides:

Turn the signe:

Conclusion:
The solution of the inequation 3x+1<5x+7 is all values greater than -3.