Write each as an algebraic expression. how do you write 18 less than 20 as an algebraic expression?

18<20

Step-by-step explanation:

As you said 18, less than, 20. 18<20

linear pair postulates

this linear equation would have just one solution.

step-by-step explanation:

the reason why this would have one solution is that it is an expression with just one variable. since that variable is not raised to a power, it will always have just one solution.