Chapter 4.5, Problem 69E

To determine

To find sum or difference of $78-\left(-34\right)$ .

Answer to Problem 69E

112

Explanation of Solution

Given information: $78-\left(-34\right)$

Calculation: If the number inside a bracket is negative, and the sign just before the bracket is for subtraction, when take the number outside of the brackets, the number becomes positive.

Given, $78-\left(-34\right)$

  $=78+34$ Here, 34 becomes positive as it was negative inside the bracket and there was a minus sign just before the bracket. Hence the two numbers are added.

  $=112$ This the answer.