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Question

Choose the correct option which gives the steps in finding the value of 'x' in the equation:
x3+4=2

 
  1. Step 1: Subtract 2 from both the sides
    Step 2: Multiply by 3 on both the sides
  2. Step 1: Subtract 4 from both the sides
    Step 2: Multiply by 3 on both the sides
  3. Step 1: Multiply by 3 from both the sides
    Step 2: Subtract 4 on both the sides
  4. Both B and C are correct


Solution

The correct option is B Step 1: Subtract 4 from both the sides
Step 2: Multiply by 3 on both the sides
x3+4=2
We need to get rid of everything other than 'x' from the LHS
+ 4 becomes zero by subtracting '4' from it.
x3+44=24
x3=2
If we multiply by '3', LHS becomes 'x'
x3×3=2×3
x=6

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