825-645

A mixed number is an addition of its whole and fractional parts.

8+25-645

Add 8 and 25.

To write 8 as a fraction with a common denominator, multiply by 55.

8⋅55+25-645

Combine 8 and 55.

8⋅55+25-645

Combine the numerators over the common denominator.

8⋅5+25-645

Simplify the numerator.

Multiply 8 by 5.

40+25-645

Add 40 and 2.

425-645

425-645

425-645

425-645

A mixed number is an addition of its whole and fractional parts.

425-(6+45)

Add 6 and 45.

To write 6 as a fraction with a common denominator, multiply by 55.

425-(6⋅55+45)

Combine 6 and 55.

425-(6⋅55+45)

Combine the numerators over the common denominator.

425-6⋅5+45

Simplify the numerator.

Multiply 6 by 5.

425-30+45

Add 30 and 4.

425-345

425-345

425-345

425-345

Combine the numerators over the common denominator.

42-345

Subtract 34 from 42.

85

Factor 8 2/5-6 4/5