The grocery store has 215 green apples and 138 red apples On Monday they sold 172 apples write an equation with a variable and figure out how many apples the grocery store has left

Let n = the number of apples the store has.

"The grocery store has 215 green apples and 138 red apples "

The total number of apples is: 215 + 138

"On Monday they sold 172 apples"

The total went down 172.

n = 215 + 138 - 172

n = 353 - 172

n = 181

Answer: The grocery store has 181 apples left.