Question

\(1-\frac{1}{2}+2-\frac{2}{3}+3-\frac{3}{4}+4-\frac{1}{4}-3-\frac{1}{3}-2-\frac{1}{2}-1\)

Answer 1

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

\(=0+0+0+4-1-1-1=1\)