Question

write two expressions where the solution is 19.

Explanation:

Step1: Create an addition expression

We can think of two numbers that add up to 19. For example, 10 and 9. So the expression is $10 + 9$.

Step2: Create a subtraction expression

We can think of a number minus another number equals 19. For example, 20 minus 1. So the expression is $20 - 1$.

Answer:

$10 + 9$ and $20 - 1$ (other valid expressions like $15 + 4$, $25 - 6$ etc. are also acceptable)