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larisa86 [58]
2 years ago
13

Perform the indicated operation. Show all necessary work.

Mathematics
1 answer:
densk [106]2 years ago
8 0

The subtraction of a negative number is the same as addition of the

positive equivalent of the number.

The outputs of the operations are;

  • (a) -2 - (-9) = 7
  • (b) -2 - 9 = -11
  • (c) -2 + 9 + 2 = 9

Reasons:

(a) The operation is -2 - (-9)

Which is the subtraction of negative 9 from negative 2, which gives, a double negative, which is equivalent to a positive, therefore, we get;

-2 - (-9) = -2 + 9 = <u>7</u>

<u />

(b) The operation is -2 - 9

The above operation is the subtraction of +9 from negative 2, which gives;

-2 - 9 =<u> -11</u>

(c) The operation is -2 - (-9) - (-2)

The above operation is the subtraction of negative 9, and negative 2 from

negative 2, and therefore, has two double negatives that result two

positive(s) increases, as follows;

-2 - (-9) - (-2) = -2 + 9 + 2 = 9

Learn more here:

brainly.com/question/20508039

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Answer:

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Double check:

(2x+1) + (6x+2) + (x + 19), x=158/9

2(158/9) + 1 = 325/9

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Answer:

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Answer:

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