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-\frac{7}{2}-3\left(-1.5\right)
Fraction \frac{-7}{2} can be rewritten as -\frac{7}{2} by extracting the negative sign.
-\frac{7}{2}-\left(-4.5\right)
Multiply 3 and -1.5 to get -4.5.
-\frac{7}{2}+4.5
The opposite of -4.5 is 4.5.
-\frac{7}{2}+\frac{9}{2}
Convert decimal number 4.5 to fraction \frac{45}{10}. Reduce the fraction \frac{45}{10} to lowest terms by extracting and canceling out 5.
\frac{-7+9}{2}
Since -\frac{7}{2} and \frac{9}{2} have the same denominator, add them by adding their numerators.
\frac{2}{2}
Add -7 and 9 to get 2.
1
Divide 2 by 2 to get 1.