Exercise 4 Page 294

When adding or subtracting fractions, they should have the same denominator. In this exercise, we have two fractions with different denominators. 4/5 - 3/10Since 10 is a multiple of 5, we can multiply both the numerator and denominator of 45 by 2 to create a common denominator.

4/5-3/10

ExpandFrac

a/b=a * 2/b * 2

4* 2/5* 2-3/10

Multiply

Multiply

8/10-3/10

Now that we have a common denominator, we can proceed to simplifying the expression.

8/10-3/10

SubFrac

Subtract fractions

8-3/10

SubTerm

Subtract term

5/10

ReduceFrac

a/b=.a /5./.b /5.

1/2