778-314

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

7+78-314

Add 7 and 78.

To write 7 as a fraction with a common denominator, multiply by 88.

7⋅88+78-314

Combine 7 and 88.

7⋅88+78-314

Combine the numerators over the common denominator.

7⋅8+78-314

Simplify the numerator.

Multiply 7 by 8.

56+78-314

Add 56 and 7.

638-314

638-314

638-314

638-314

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

638-(3+14)

Add 3 and 14.

To write 3 as a fraction with a common denominator, multiply by 44.

638-(3⋅44+14)

Combine 3 and 44.

638-(3⋅44+14)

Combine the numerators over the common denominator.

638-3⋅4+14

Simplify the numerator.

Multiply 3 by 4.

638-12+14

Add 12 and 1.

638-134

638-134

638-134

638-134

To write -134 as a fraction with a common denominator, multiply by 22.

638-134⋅22

Multiply 134 and 22.

638-13⋅24⋅2

Multiply 4 by 2.

638-13⋅28

638-13⋅28

Combine the numerators over the common denominator.

63-13⋅28

Multiply -13 by 2.

63-268

Subtract 26 from 63.

378

378

Combine 7 7/8-3 1/4