The second number line best shows how to solve β4 β (β8). This can be obtained by finding the value of β4 β (β8) and checking which number line has the required arrow mark.
The value of Β β4 β (β8) is obtained.
β4 β (β8) = Β β4 + 8
β4 β (β8) = 4
The arrow should move from zero to - 4 and the second arrow should move from - 4 to 4.
From the question given the number lines,
The first arrow is moving from zero to - 4.
First condition is satisfied.
The second arrow is moving from - 4 to Β 8.
Second condition is not satisfied.
The first arrow is moving from zero to - 4.
First condition is satisfied.
The second arrow is moving from - 4 to Β 4.
Second condition is satisfied.
Hence the second number line best shows how to solve β4 β (β8).
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