Answer
This question is related to basic algebraic expression. Its answer will be -7/3
Explanation
Any mathematical phrase that contains numbers, variables with algebraic operators (like +, -, *, /) is called algebraic expression equation. The values of variables such as x, y or a, b can be changed accordingly. In this phrase, 3 and 7 are constant numbers while x represents a variable. Some other examples of an algebraic expression are the following;
x + 6
y + z -1
To solve this problem,
3x +7 =0
3x = -7
x = -7/3
