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.