For the following values of a and b, write sentences like 'Subtracting b from a means adding the opposite of b to a'.

(1) a = 13, b = (−8)
(2) a = −4, b = (−11)
(3) a = 6, b = −6
(4) a = 9, b = 9
(5) a = −5, b = −5
(6) a = 14, b = 0
(7) a = 0, b = 14
(8) a = 0, b = −14
(9) a = 20, b = 12

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Solution

(1) Subtracting (–8) from 13 means adding the opposite of (–8) to 13.

(2) Subtracting (–11) from (–4) means adding the opposite of (–11) to (–4).

(3) Subtracting (–6) from 6 means adding the opposite of (–6) to 6.

(4) Subtracting 9 from 9 means adding the opposite of 9 to 9.

(5) Subtracting (–5) from (–5) means adding the opposite of (–5) to (–5).

(6) Subtracting 0 from 14 means adding the opposite of 0 to 14.

(7) Subtracting 14 from 0 means adding the opposite of 14 to 0.

(8) Subtracting (–14) from 0 means adding the opposite of (–14) to 0.

(9) Subtracting 12 from 20 means adding the opposite of 12 to 20.

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