Question

\(\dfrac{8}{9}\)+ \(\dfrac{15}{23}\)+ \(\dfrac{1}{9}\)+\(\dfrac{-15}{23}\)+\(\dfrac{1}{2}\)

Answer 1

\(\dfrac{8}{9}+\dfrac{15}{23}+\dfrac{1}{9}+\dfrac{-15}{23}+\dfrac{1}{2}\)

\(=\left(\dfrac{8}{9}+\dfrac{1}{9}\right)+\left(\dfrac{-15}{23}+\dfrac{15}{23}\right)+\dfrac{1}{2}\)

\(=1+0+\dfrac{1}{2}\)

\(=\dfrac{3}{2}\)

Answer 2

\(\dfrac{8}{9}+\dfrac{15}{23}+\dfrac{1}{9}+\dfrac{-15}{23}+\dfrac{1}{2}\)

=\((\dfrac{8}{9}+\dfrac{1}{9})\) +\((\dfrac{15}{23}+\dfrac{-15}{23})\) +\(\dfrac{1}{2}\)

= 1+ 0+\(\dfrac{1}{2}\)

= \(\dfrac{3}{2}\)

Answer 3

\(=\left(\dfrac{8}{9}+\dfrac{1}{9}\right)+\left(\dfrac{-15}{23}+\dfrac{15}{23}\right)+0,5=\dfrac{9}{9}+0+0,5=1+0,5=1,5\)

Answer 4

\(\dfrac{8}{9}+\dfrac{15}{23}+\dfrac{1}{9}+\dfrac{-15}{23}+\dfrac{1}{2}\)

\(=\left(\dfrac{8}{9}+\dfrac{1}{9}\right)+\left(\dfrac{15}{23}+\dfrac{-15}{23}\right)+\dfrac{1}{2}\)

\(=1+0+\dfrac{1}{2}\)

\(=1+\dfrac{1}{2}=\dfrac{3}{2}\)

Answer 5

\(\dfrac{8}{9}+\dfrac{15}{23}+\dfrac{1}{9}+\dfrac{-15}{23}+\dfrac{1}{2}\)

\(=\left(\dfrac{8}{9}+\dfrac{1}{9}\right)+\left(\dfrac{15}{23}+\dfrac{-15}{23}\right)+\dfrac{1}{2}\)

\(=1+0+\dfrac{1}{2}\)

\(=1+\dfrac{1}{2}\)

\(=\dfrac{3}{2}\)