1/ -8 - 9

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1 answer

To solve the problem, we will perform the operations in the given order:

1/ -8 - 9

First, let's simplify the expression by finding the reciprocal of -8:

1/-8 = -1/8

So now the expression becomes:

-1/8 - 9

To combine -1/8 and 9, we need a common denominator.

The common denominator for 8 and 1 is 8.

Rewriting 9 as 9/1, we can multiply both the numerator and denominator of -1/8 by 1 to maintain the value:

-1/8 - 9/1

Now, the expression becomes:

-1/8 - 9/1

To subtract fractions with different denominators, we need to find the least common denominator (LCD). In this case, the LCD is 8.

To get -1/8 to have a denominator of 8, we need to multiply the numerator and denominator by 8:

(-1/8) * (8/8) = -8/64

So now the expression becomes:

-8/64 - 9/1

-8/64 is equivalent to -1/8, so we have:

-1/8 - 9/1

Now we can subtract the fractions:

-1/8 - 9/1 = (-1 - 72)/8 = -73/8

Therefore, 1/ -8 - 9 = -73/8.