Listen
$7+7+(-1)=$
A) 10
B) 7
C) 16
D) 13
Answer (2)
The expression 7 + 7 + ( − 1 ) evaluates to 13. After adding the first two numbers (14) and then subtracting 1, we arrive at the final result. Thus, the answer is D) 13.
;
Add the first two numbers: 7 + 7 = 14 .
Subtract 1 from the result: 14 − 1 = 13 .
The final answer is 13 .
Explanation
Understanding the Problem We are asked to evaluate the expression 7 + 7 + ( − 1 ) and choose the correct answer from the given options.
Calculating the Sum To evaluate the expression, we perform the addition and subtraction: 7 + 7 + ( − 1 ) = 14 − 1 = 13
Selecting the Correct Answer Now, we compare the result, 13, with the given options: A) 10 B) 7 C) 16 D) 13 The correct answer is D) 13.
Examples
In everyday life, you might use this type of calculation when managing your finances. For example, if you earn $7 one day, another $7 the next day, but then spend $1, you can calculate your total earnings as $7 + $7 - $1 = $13. This simple arithmetic is fundamental to budgeting and understanding your financial balance.
