Question

Find the value of expression given below,
(- 28) + (- 32) =?
A.+60
B.-60
C.0
D.60

Answer 1

Hint: Take -1 common from the given expression and then add the two numbers. Finally multiply the value by -1 to get the final answer.
Complete step by step answer:
To solve the above expression we will first write it down and assume it as ‘S’,
S = (- 28) + (- 32) …………………………………………………….. (1)
We can also write the above equation as,
Therefore, S = – 28 – 32
We can write the above equation by taking – 1 outside of each term therefore we will get,
Therefore, S = (– 1) 28 + (– 1) 32
Now if we take (– 1) common from the above equation we will get,
Therefore, S = (– 1) (28 + 32)
If we perform the addition operation in the above equation we will get,
Therefore, S = (– 1) (60)
If we multiply 60 by – 1 in the above equation we will get,
Therefore, S = – 60
If we compare above equation with equation (1) then we can write,
Therefore, (- 28) + (- 32) = – 60
Therefore the value of the given expression (- 28) + (- 32) is equal to – 60.
Therefore the correct answer is option (b).

Note: There is no need to make the solution lengthy, you can directly use the concepts that if the sign is the same then do the addition and give the same sign to the solution.