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Question

The steps to check if y = 9 satisfies the inequation y + 3 ≥ 11 are given below. Choose the step in which first error is made.


A
Step 1
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B
Step 2
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C
Step 3
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D
Step 4
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Solution

The correct option is C Step 3
Given inequation is y + 3 ≥ 11

To find which is step is the error, we have to check the given value is true or not.

Substituting the given value y = 9 in the LHS of the inequation, we get:
y+3=9+3=12

So,
LHS = 12
RHS = 11

∴ LHS ≥ RHS
But in the Step 3, it is given in the opposite way.

Hence, Step 3 is incorrect.

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