2.5 –12

asked by guest
on Sep 20, 2024 at 5:42 pm



You asked:

Evaluate the expression: \(2.5 - 12\)

MathBot Answer:

\[ 2.5 - 12 = - \frac{19}{2} = -9.5 \]

The sum can be computed by rewriting each term over a common denominator, where the least common denominator of \(\frac{2}{1}\), \(\frac{5}{10}\), and \(\frac{-12}{1}\) is \(10\). \[ \begin{aligned} 2.5 - 12 &= \frac{2 \cdot 10}{1 \cdot 10} + \frac{5 \cdot 1}{10 \cdot 1} + \frac{-12 \cdot 10}{1 \cdot 10} \\ &= \frac{20 + 5 + -120}{10} \\ &= \frac{-95}{10} \\&= - \frac{19}{2} \end{aligned} \]


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