Question

1 + 2/3 + 6/15 + 3/5 + 40% - 1/15

 

Answer 1

\(1+\dfrac{2}{3}+\dfrac{6}{15}+\dfrac{3}{5}+40\%-\dfrac{1}{15}\)
\(=1+\dfrac{2}{3}+\dfrac{2}{5}+\dfrac{3}{5}+\dfrac{2}{5}-\dfrac{1}{15}\)
\(=\dfrac{15+10+6+9+6-1}{15}=\dfrac{45}{15}=3\)

Answer 2

\(1+\dfrac{2}{3}+\dfrac{6}{15}+\dfrac{3}{5}+40\%-\dfrac{1}{15}=1+\dfrac{2}{3}+\dfrac{6}{15}+\dfrac{3}{5}+\dfrac{2}{5}-\dfrac{1}{15}\)

\(=\dfrac{5}{3}+\dfrac{6}{15}+\dfrac{3}{5}+\dfrac{2}{5}-\dfrac{1}{15}=\dfrac{31}{15}+\dfrac{3}{5}+\dfrac{2}{5}-\dfrac{1}{15}\)

\(\dfrac{8}{3}+\dfrac{2}{5}-\dfrac{1}{15}=\dfrac{46}{15}-\dfrac{1}{15}=\dfrac{45}{15}=3\)

Answer 3

=

=3

Answer 4

\(1+\dfrac{2}{3}+\dfrac{6}{15}+\dfrac{3}{5}+40\%-\dfrac{1}{15}\)

\(=1+\dfrac{10}{15}+\dfrac{6}{15}+\dfrac{9}{15}+\dfrac{6}{15}-\dfrac{1}{15}\)

\(=1+\dfrac{30}{15}\)

\(=1+2=3\)

Answer 5