Question

Calculate \[7 - 77 - 3\]
A \[ - 63\]
B \[53\]
C \[ - 53\]
D \[ - 73\]

Answer 1

Hint: Integers are a special group of numbers that are positive, negative and zero, which are not fractions. Rules for addition and subtraction are the same for all. To solve the given expression, we need to know all about subtraction and addition rules, hence with respect to that we need to calculate the given expression.

Complete step by step answer:
Given expression is:
 \[7 - 77 - 3\]
Let, us split the given expression and then calculate it as:
\[ \Rightarrow \left( {7 - 77} \right) - 3\]
Now, first calculate the numbers available in the brackets, then the remaining terms as:
\[ \Rightarrow \left( { - 70} \right) - 3\]
\[ \Rightarrow - 70 - 3\]
Simplifying the terms, we get the value as:
\[ \Rightarrow - 73\]
Hence, the value of \[7 - 77 - 3\] is:
\[ \Rightarrow 7 - 77 - 3 = - 73\]

So, the correct answer is “Option D”.

Additional information: To add integers having the same sign, keep the same sign and add the absolute value of each number. To add integers with different signs, keep the sign of the number with the largest absolute value and subtract the smallest absolute value from the largest. Subtract an integer by adding its opposite.

Note: To calculate any given expression, we must know that adding two positive integers results in positive integers, whereas adding two negative integers will result in the sum with a negative sign. But, the addition of two different signed integers, will result in subtraction only.