Rewrite subtraction equation with whole number and fraction part separated

8 +

3

10

- 7 -

1

9

Solve the whole number parts

8 - 7 = 1

Now, solve the fraction parts

3

10

-

1

9

Least Common Denominator (LCD) of 10 and 9 is 90.

Now, we have to make sure both fractions have the same new denominator 90.

You can write fraction

3

10

as

3x9

10x9

=

27

90

You can write fraction

1

9

as

1x10

9x10

=

10

90

Now, both fractions have same denominator and we are ready to subtract

27

90

-

10

90

=

27-10

90

=

17

90

Combine whole numbers and fraction parts

1 +

17

90

= 1

17

90