She will have 65 jars left when all the boxes are full
Algebraic expressions in mathematics are a combination of coefficients, numbers, variables, constants and arithmetic operations such as addition, subtraction, multiplication, and division
12 jars = 1 box
The number of jars that the boxes can hold :
[tex]\tt 50\times 12=600[/tex]
Because there are 665 jars, there are still jars that cannot be entered in the box,
[tex]\tt 665-600=65~jars[/tex]