Question

In the algebraic expression, $5x+25=125$, the value of unknown is

• A. 15
• B. 20
• C. 25
• D. 30

Answer 1

The correct option is B 20

Given, $5x+25=125$
We need to solve $x$ by isolating it on one side of the equation.

Step 1: Subtract 125 from both sides of the equation to eliminate the constant on the left side of the equation.
$\Rightarrow 5x+25-25=125-25\Rightarrow 5x=100$

Step 2: Now, divide both sides by 5 to eliminate 5 on the left side of the equation.
$\Rightarrow \frac{5x}{5}=\frac{100}{5}\Rightarrow x=20$

$\text{Hence,}x\text{= 20}$