Evaluate 2/3+-5/6+-7/9

Math
23+-56+-79
Find the common denominator.
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Multiply 23 by 66.
23⋅66+-56+-79
Combine.
2⋅63⋅6+-56+-79
Multiply -56 by 33.
2⋅63⋅6+-56⋅33+-79
Combine.
2⋅63⋅6+-5⋅36⋅3+-79
Multiply -79 by 22.
2⋅63⋅6+-5⋅36⋅3+-79⋅22
Combine.
2⋅63⋅6+-5⋅36⋅3+-7⋅29⋅2
Multiply 3 by 6.
2⋅618+-5⋅36⋅3+-7⋅29⋅2
Reorder the factors of 6⋅3.
2⋅618+-5⋅33⋅6+-7⋅29⋅2
Multiply 3 by 6.
2⋅618+-5⋅318+-7⋅29⋅2
Reorder the factors of 9⋅2.
2⋅618+-5⋅318+-7⋅22⋅9
Multiply 2 by 9.
2⋅618+-5⋅318+-7⋅218
2⋅618+-5⋅318+-7⋅218
Combine fractions.
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Combine fractions with similar denominators.
2⋅6-5⋅3-7⋅218
Multiply.
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Multiply 2 by 6.
12-5⋅3-7⋅218
Multiply -5 by 3.
12-15-7⋅218
Multiply -7 by 2.
12-15-1418
12-15-1418
12-15-1418
Simplify the numerator.
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Subtract 15 from 12.
-3-1418
Subtract 14 from -3.
-1718
-1718
Move the negative in front of the fraction.
-1718
The result can be shown in multiple forms.
Exact Form:
-1718
Decimal Form:
-0.94‾
Evaluate 2/3+-5/6+-7/9

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