-1245÷(-1115)

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

-(12+45)-1115

Add 12 and 45.

To write 12 as a fraction with a common denominator, multiply by 55.

-(12⋅55+45)-1115

Combine 12 and 55.

-(12⋅55+45)-1115

Combine the numerators over the common denominator.

-12⋅5+45-1115

Simplify the numerator.

Multiply 12 by 5.

-60+45-1115

Add 60 and 4.

-645-1115

-645-1115

-645-1115

-645-1115

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

-645-(1+115)

Add 1 and 115.

Write 1 as a fraction with a common denominator.

-645-(1515+115)

Combine the numerators over the common denominator.

-645-15+115

Add 15 and 1.

-645-1615

-645-1615

-645-1615

Dividing two negative values results in a positive value.

6451615

Multiply the numerator by the reciprocal of the denominator.

645⋅1516

Factor 16 out of 64.

16(4)5⋅1516

Cancel the common factor.

16⋅45⋅1516

Rewrite the expression.

45⋅15

45⋅15

Factor 5 out of 15.

45⋅(5(3))

Cancel the common factor.

45⋅(5⋅3)

Rewrite the expression.

4⋅3

4⋅3

Multiply 4 by 3.

12

Divide (-12 4/5)÷(-1 1/15)