# Combine 7 7/8-3 1/4 778-314
Convert 778 to an improper fraction.
A mixed number is an addition of its whole and fractional parts.
7+78-314
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
638-314
638-314
638-314
638-314
Convert 314 to an improper fraction.
A mixed number is an addition of its whole and fractional parts.
638-(3+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
638-134
638-134
638-134
638-134
To write -134 as a fraction with a common denominator, multiply by 22.
638-134⋅22
Write each expression with a common denominator of 8, by multiplying each by an appropriate factor of 1.
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
Simplify the numerator.
Multiply -13 by 2.
63-268
Subtract 26 from 63.
378
378
Combine 7 7/8-3 1/4

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