Add the following numbers using the number line.
$(+ 7) + (- 3)$

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Solution

From $+ 7$ we move $3$ units to the left and arrive at $4$

$(+ 7) + (- 3)$ $= 4$
Hence, we get $+ 4$ when we subtract $- 3$ from $+ 7$ .

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Question 3 (a)

Add without using number line:
11 + (–7)

11 + (- 7)

Question 2 (c)

Use number line and add the following integers:

(–1) + (–7)

Add without using the number line

$3 + 9$

Add the following numbers using the number line.

$(- 3) + (- 3)$

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