Question

cộng các phân số sau:

a)36/ -84 +100/450

b)-650/1430 +588/686

Answer 1

\(\frac{36}{-84}+\frac{100}{450}\)

\(=\frac{3}{-7}+\frac{2}{9}\)

\(=-\frac{13}{63}\)

\(-\frac{650}{1430}+\frac{588}{686}\)

\(=-\frac{5}{11}+\frac{6}{7}\)

\(=\frac{31}{77}\)

Answer 2

\(a,\frac{36}{-84}+\frac{100}{450}\)

\(=-\frac{3}{7}+\frac{2}{9}\)

\(=\frac{-13}{63}\)

\(b,\frac{-650}{1430}+\frac{588}{686}\)

\(=-\frac{5}{11}+\frac{6}{7}\)

\(=\frac{31}{77}\)

Học tốt

Answer 3

\(\frac{36}{-84}+\frac{100}{450}=\frac{-3}{7}+\frac{2}{9}=\frac{-27}{63}+\frac{14}{63}=-\frac{13}{63}\)