In the algebraic expression, $2 x + 1 = 3$ , the value of unknown is

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Solution

The correct option is A 1
The unknown is $x$
We need to solve $x$ by isolating it to one side of the equation

$2 x + 1 = 3$
Step 1: Subtract 1 from both sides of the equation to eliminate the constant on the left side of the equation.
$2 x + 1 - 1 = 3 - 1 2 x = 2$

Step 2: Now, divide both sides by 2 to eliminate 2 on the left side of the equation.
$\frac{2 x}{2} = \frac{2}{2} x = 1$

Hence, $x = 1$

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