312-225

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

3+12-225

Add 3 and 12.

To write 3 as a fraction with a common denominator, multiply by 22.

3⋅22+12-225

Combine 3 and 22.

3⋅22+12-225

Combine the numerators over the common denominator.

3⋅2+12-225

Simplify the numerator.

Multiply 3 by 2.

6+12-225

Add 6 and 1.

72-225

72-225

72-225

72-225

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

72-(2+25)

Add 2 and 25.

To write 2 as a fraction with a common denominator, multiply by 55.

72-(2⋅55+25)

Combine 2 and 55.

72-(2⋅55+25)

Combine the numerators over the common denominator.

72-2⋅5+25

Simplify the numerator.

Multiply 2 by 5.

72-10+25

Add 10 and 2.

72-125

72-125

72-125

72-125

To write 72 as a fraction with a common denominator, multiply by 55.

72⋅55-125

To write -125 as a fraction with a common denominator, multiply by 22.

72⋅55-125⋅22

Multiply 72 and 55.

7⋅52⋅5-125⋅22

Multiply 2 by 5.

7⋅510-125⋅22

Multiply 125 and 22.

7⋅510-12⋅25⋅2

Multiply 5 by 2.

7⋅510-12⋅210

7⋅510-12⋅210

Combine the numerators over the common denominator.

7⋅5-12⋅210

Multiply 7 by 5.

35-12⋅210

Multiply -12 by 2.

35-2410

Subtract 24 from 35.

1110

1110

The result can be shown in multiple forms.

Exact Form:

1110

Decimal Form:

1.1

Mixed Number Form:

1110

Simplify 3 1/2-2 2/5