What will come in the place of question mark (?) in the following questions?
((3 × 12) ÷ 18 + 1) + 84 = 148 - ?
Correct Answer :
61
Solution :
The correct option is 61.
We are given the algebraic equation:
Let the missing value in place of the question mark () be represented as .
To solve for , we will simplify the left-hand side step-by-step using the BODMAS rule (Brackets, Orders, Division/Multiplication, Addition/Subtraction).
Step 1: Simplify the innermost multiplication inside the bracket
Calculate :
Substitute this back into the equation:
Step 2: Perform the division inside the bracket
Calculate :
Substitute this result back into the expression:
Step 3: Complete the addition inside the bracket
Calculate :
So the equation becomes:
Step 4: Perform the final addition on the left-hand side
Calculate :
Step 5: Solve for
Rearrange the equation to isolate :
Hence, the number that comes in place of the question mark is 61.
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