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Question

what is 2 +2-2 ?

AI confidence: 70%Asked 5/7/2026

AI-Verified Answer

Understanding the Problem

We are given a basic arithmetic expression to evaluate:

\[ 2 + 2 - 2 \]

Solution Approach

To solve this, we will use the standard rules for the Order of Operations, commonly remembered by the acronyms BODMAS (Brackets, Orders, Division/Multiplication, Addition/Subtraction) or PEMDAS.

  • According to these rules, addition and subtraction have the exact same level of priority.
  • When an expression contains only addition and subtraction, we solve it by working from left to right.

Step-by-Step Solution

Step 1: Perform the Addition

Starting from the left side of the expression, we first add the first two numbers together:

\[ 2 + 2 = 4 \]

Now, substitute this result back into our original expression, which gives us:

\[ 4 - 2 \]

Step 2: Perform the Subtraction

Next, we take the result from Step 1 and subtract the remaining number:

\[ 4 - 2 = 2 \]

Alternative Method (Using Additive Inverses)

As a Class 8 student, you also know about integers and their properties. When you add a number and then subtract the exact same number, they cancel each other out. This relies on the property of additive inverses.

\[ a + b - b = a \]

Applying this algebraic concept to our expression:

In the expression \( 2 + 2 - 2 \), the \( + 2 \) and the \( - 2 \) act as opposites and cancel each other out (since \( 2 - 2 = 0 \)). This leaves us instantly with just the first \( 2 \).

Final Answer

Therefore, the final value of the expression is:

\[ 2 + 2 - 2 = 2 \]

Double-verified by GPT + Grok. Please confirm with faculty before exams.

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