z + 650 = 220 

        z = 220 - 650 

        z = - 430 

trang ơi tk em em tk lại

z + 650 = 100 + 120

z + 650 = 220

x          = 220 - 650

x          =   - 430

z+650= 100+120

z+650= 220

z= -430

đáp số -430

x + 650 = 5000

x          = 5000-650

x          = 4530

x + 650 = 50 x 100

x + 650 = 5000

x          = 5000 - 650

x          = 4350

\(x+650=50\times100\)

\(\Leftrightarrow x+650=5000\)

\(\Leftrightarrow x=5000-650\)

\(\Leftrightarrow x=4350\)

x +100 = 500 : 2

x+ 100 = 250

x=250-100

x= 150

x+500= 650

x= 650-500 

x= 150 

k giúp mik nhé

x + 100 = 500 : 2

x + 100 = 250

x = 250 - 100

x = 150

x + 500 = 600

x = 600 - 500

x = 100

K mk mk k lại

Hứa luôn 

150 HẾT

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Học tốt

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

175/10=17,5

506/100=5,06

6507/1000=6,507

751/10=75,1

650/100=6,5

7065/1000=7,065

175 / 10 = 17,5

506 / 100 = 5,06

6507 / 1000 = 6,507

751 / 10 = 75,1

650 / 100 = 6,5

7065 / 1000 =7,065

b)-128/153

c)minh ko biet

d)338/335

tk ung ho minh nha

B

b. 24 650 : 120 = 205 (dư 50)

B

B

B