a, \(\frac{65}{91}+\frac{-33}{55}=\frac{5}{7}+\frac{-3}{5}=\frac{4}{35}\)

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

c, \(\frac{-650}{1430}+\frac{588}{686}=\frac{-5}{11}+\frac{6}{7}=\frac{31}{77}\)

d, \(\frac{2004}{2010}+\frac{8}{-670}=\frac{334}{335}+\frac{-4}{335}=\frac{66}{67}\)

thank you

Tính :

a) 65 / 91  +  -33 / 55

\(=\frac{5}{7}-\frac{3}{5}=\frac{4}{35}\)

b) 36 / -84  +  100 // 450

\(=\frac{-3}{7}+\frac{2}{9}=-\frac{13}{63}\)

c) -650 / 1430  +  588 / 686

\(=\frac{5}{11}+\frac{6}{7}=\frac{101}{77}\)

d) 2004 / 2010 + 8 / -670

=\(=\frac{334}{335}-\frac{4}{335}=\frac{66}{67}\)

ths ban nha

65/91 + -33/55=4/35

36/-84 + 100/450=-13/63

-650/1430 + 588/686=31/77

20004/2010 + 8/-670=666/67

\(-\frac{650}{1430}+\frac{588}{686}=\frac{31}{77}\)

\(\frac{2004}{2010}+\frac{8}{-670}=\frac{66}{67}\)

-650/1430+588/686=31/77

2004/2010+8/-670=66/67

-650/1430+588/686

=> -650/1430+588/686=31/77

2004/2010+8/-670

=> 2004/2010+8/-670=66/67

a) -650/1430+588/686= -5/11+ 6/7= 31/77

b) 2004/2010+8/-670= 334/335+(-4/335)=66/67

Bấm ĐÚNG cho mình nha

a  31/77

b    66/67

bạn vô kham khỏa nha

87013248405.html

kham khỏa nha

87013248405.html

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

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

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

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

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

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

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

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

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

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

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

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

Học tốt

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

\(\frac{-650}{1430}+\frac{588}{686}=\frac{31}{77}\)

\(\frac{2004}{2010}+\frac{8}{-670}=\frac{66}{67}\)

b)-128/153

c)minh ko biet

d)338/335

tk ung ho minh nha