List and describe the steps you would use to model 7/10 - 4/10.

We have

7/10 - 4/10

1) fractions that have a common denominator

Combine the numerators together, put the difference over the common denominator

(7-4) / 10=3/10

2) reduce to lowest terms if possible

3/10=0.30

the answer is 0.30