Which of the ones below are expressions?

3b + c 56 - n = 8 5 + 6c 5 = 2y 4 = 6 -3m

To determine which of the given options are expressions, we need to understand what an expression is.

An expression is a mathematical statement that consists of variables, numbers, and mathematical operations such as addition, subtraction, multiplication, and division. It does not have an equal sign (=) and cannot be solved because it is not an equation.

Let's evaluate each option to determine if it meets the criteria of an expression:

1. 3b + c: This is an expression because it consists of variables (b and c) and a mathematical operation (addition).

2. 56 - n = 8: This is not an expression but an equation because it includes an equal sign (=), indicating a comparison between two expressions. It can be solved to find the value of 'n'.

3. 5 + 6c: This is an expression because it consists of a variable (c) and a mathematical operation (addition).

4. 5 = 2y: This is not an expression but an equation because it includes an equal sign (=), indicating a comparison between two expressions. It can be solved to find the value of 'y'.

5. 4 = 6 - 3m: This is not an expression but an equation because it includes an equal sign (=), indicating a comparison between two expressions. It can be solved to find the value of 'm'.

Therefore, the expressions among the options are 3b + c and 5 + 6c.