Question

tính các tổng dưới đây sau khi đã rút gọn phân số: 808/909+111/333+ -202/303

Answer 1

tổng bằng \(\frac{5}{9}\)

Answer 2

\(\frac{808}{909}+\frac{111}{333}+\left(-\frac{202}{303}\right)\)

\(=\frac{8}{9}+\frac{1}{3}-\frac{2}{3}\)

\(=\frac{8}{9}+\frac{3}{9}-\frac{6}{9}\)

\(=\frac{5}{9}\)

Answer 3

\(\frac{808}{909}+\frac{111}{333}+\frac{-202}{303}\)

\(=\frac{8}{9}+\frac{1}{3}+\frac{-2}{3}=\frac{8}{9}+\frac{1+(-2)}{3}=\frac{8}{9}+\frac{-1}{3}=\frac{24+(-9)}{27}=\frac{15}{27}=\frac{5}{9}\)