To solve the equation \( 5x - 3 = 28 \), follow these steps:
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Add 3 to both sides of the equation:
\[ 5x - 3 + 3 = 28 + 3 \]
This simplifies to:
\[ 5x = 31 \]
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Now, divide both sides by 5:
\[ x = \frac{31}{5} \]
Thus, the solution to the equation is:
\[ x = 6.2 \]