2(n+1.5)=4.5

2(n+1.5)=4.5
2n+3=9
2n=6
N=3
What is the error in his reasoing ? Explain

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There is no need to multiply the left side of the equation by 2.

The error in the reasoning lies in the step where it is concluded that N (or n) is equal to 3.

Let's go through the steps to identify the error:

1. The original equation is given as 2(n+1.5) = 4.5.
2. In the next step, both sides are divided by 2 to isolate the expression within the parentheses: n+1.5 = 2.25.
3. To solve for n, we need to subtract 1.5 from both sides of the equation. This gives us: n = 2.25 - 1.5 = 0.75.

The error occurs in the final step, where it is incorrectly concluded that n is equal to 3. In reality, the correct value for n is 0.75, not 3.

To avoid such errors, it is important to carefully follow the proper order of operations (PEMDAS/BODMAS) and perform each step accurately.