Question

Simplication of integers​

Answer 1

Step-by-step explanation:

Simplifying and Evaluating Expressions With Integers

Subtract −23−7 . Think: We start with 23 negative counters. We have to subtract 7 positives, but there are no positives to take away. So we add 7 neutral pairs to get the 7 positives. ...

Subtract 30−(−12) . Think: We start with 30 positives. We have to subtract 12 negatives, but there are no negatives to take away.