Evaluate the following.
$64 - 48 + 151 - 123 + (- 124) - (- 167)$

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Solution

$64 - 48 + 151 - 123 + (- 124) - (- 167)$
$= (64 + 151 + 167) - (48 + 123 + 124) = 382 - 295 = 87$
Hence, $87$ is the sum of $64 - 48 + 151 - 123 + (- 124) - (- 167)$
In order to add two numbers of same sign,we add the absolute value of the number and insert the common sign to the sum.
In order to add two integers of opposite sign we find the absolute value of the integer and subtract smaller absolute value from the larger absolute value and attach the sign of the integer which has the largest absolute value.

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