What is the value of s [ s - 5 - {5 - 4 + (7 × 6 -12 ÷ 3)} = -40 ]
We will use the concept of BODMAS and transposition to find the value of s.
Answer : The value of s = 4
Let's see how we will use the concept of BODMAS and transposition to find the value of s.
Explanation:
We will follow the BODMAS and solve the above expression step by step to find the value of s.
Step 1: We will solve the innermost parenthesis first i.e. (7 × 6 - 12 ÷ 3)
= (7 × 6 - (12 ÷ 3))
= (7 × 6 - 4)
= 42 - 4 = 38
⇒ s - 5 - {5 - 4 + 38} = -40 [(7 × 6 - 12 ÷ 3) = 38]
Step 2 : We will solve the curly parenthesis i.e. {5 - 4 + 38} and on solving we get 39
⇒ s - 5 - 39 = -40
Step 3 : We will solve the left-hand expression i.e. s - 5 - 39 and on solving we get
⇒ s - 44 = -40
Step 4: We will transpose -44 to the right-hand side of the equation, and on transposing sign of -44 will be changed from negative to positive
⇒ s = 44 - 40
⇒ s = 4