Juan has 27 shirts to fold.

Let N be the number of shirts he would have left to fold after folding F of them.

Write an equation relating N to F Then use this equation to find the number of shirts he would have left to fold after folding 25 of them.

equation:
number left to fold after folding 25 of them:

N = 27 - F

Number left to fold after folding 25 of them:
N = 27 - 25
N = 2

After folding 25 shirts, Juan would have 2 shirts left to fold.