Answer:
12, -3.7, 1/3
Step-by-step explanation:
12+x-3.7 -8y +1/3
Combine like terms
12+x-3.7 -8y +1/3
12-3.7 +1/3 +x -8y
The first three terms are constants. They never change value. The terms with x and y are not constant. They change as the variables change.
