Question

-3/4 + (3-1/4) - (2,25 - 9/2)

Answer 1

\(=-\dfrac{3}{4}+3-\dfrac{1}{4}-\dfrac{9}{4}+\dfrac{9}{2}=-\dfrac{13}{4}+3+\dfrac{9}{2}=\dfrac{17}{4}\)

Answer 2

   \(-\dfrac{3}{4}+\left(3-\dfrac{1}{4}\right)-\left(2,25-\dfrac{9}{2}\right)\)

= \(-1+3-\left(\dfrac{9}{4}-\dfrac{9}{2}\right)\)

= \(2+\dfrac{9}{4}=\dfrac{17}{4}\)

Answer 3

\(-\dfrac{3}{4}+\left(3-\dfrac{1}{4}\right)-\left(2,25-\dfrac{9}{2}\right)=-\dfrac{3}{4}+\dfrac{11}{4}-1,8=2-1,8=0,2\)