Answer: -2 < x < 1
Explanation:
To solve the inequality 1 < x + 3 < 4, we need to isolate the variable 'x'.
1 < x + 3 < 4
Subtracting 3 from all parts of the inequality, we get:
1 - 3 < x + 3 - 3 < 4 - 3
-2 < x < 1
Therefore, the solution to the inequality 1 < x + 3 < 4 is -2 < x < 1. This means that the value of 'x' must be greater than -2 and less than 1 to satisfy the inequality.