What are two expressions where the solution is 19

Two expressions with the solution of eighteen could be this:
x+20=39 or 10x+1=191. Both of these equations' x-values are equal to 19, which is what the question is asking for. Hope this helped!

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.