Question

Tìm x

a) ( x - 149 ) : 35 = 270

b) ( 2009 - x ) : 29 + 32 = 100

c) x + 472 = 918

Answer 1

#)Giải :

a)\(\left(x-149\right)\div35=270\)

\(\Leftrightarrow x-149=9450\)

\(\Leftrightarrow x=9599\)

Answer 2

\(a,(x-149):35=270\)

\(\Leftrightarrow x-149=9450\)

\(\Leftrightarrow x=9450+149=9599\)

Vậy x = 9599

\(b,(2009-x):29+32=100\)

\(\Leftrightarrow(2009-x):29=68\)

\(\Leftrightarrow2009-x=1972\)

\(\Leftrightarrow x=2009-1972=37\)

Vậy x = 37

\(c,x+472=918\)

\(\Leftrightarrow x=918-472=446\)

Vậy x = 446

Answer 3

a) (x - 149) : 35 = 270

              x - 149 = 270 . 35

               x - 149 = 9450

                        x = 9450 + 149

                        x = 9599

b) (2009 - x) : 29 + 32 = 100

            (2009 - x) : 29 = 100 - 32

            (2009 - x) : 29 = 68

                     2009 - x = 68 x 29

                    2009 - x = 1972

                               x = 2009 - 1972

                               x = 37

c) x + 172 = 918

              x = 918 - 472

              x = 446

Answer 4

a, (x - 149) : 35 = 270 

=> x - 149 = 270 . 35 

=>  x - 149 = 9450

=> x = 9450 + 149 

=> x = 9599

Vậy x = 9599 

b, (2009 - x) : 29 + 32 = 100

=> (2009 - x) : 29 = 100 - 32 

=> (2009 - x) : 29 = 68 

=> 2009 - x = 68 . 29

=> 2009 - x = 1972 

=>  x = 2009 - 1972 

=> x = 37 

c, x + 472 = 918 

=> x = 918 - 472 

=> x = 446 

Vậy x = 446 

Answer 5

#)Next :

c)\(x+472=918\)

\(\Leftrightarrow x=446\)

P/s : Câu b) viết thiếu hay lỗi ph k ? tính ra kết quả cứ sao sao ý ?

Answer 6

a, \(\left(x-149\right):35=270\)

\(\Rightarrow x-149=270.35\)

\(\Rightarrow x-149=9450\)

\(\Rightarrow x=9450+149\)

\(\Rightarrow x=9599\)

b, \(\left(2009-x\right):29+32=100\)

\(\Rightarrow\left(2009-x\right):29=100-32\)

\(\Rightarrow\left(2009-x\right):29=68\)

\(\Rightarrow2009-x=68.29\)

\(\Rightarrow2009-x=1972\)

\(\Rightarrow x=2009-1972\)

\(\Rightarrow x=37\)

c, \(x+472=918\)

\(\Rightarrow x=918-472\)

\(\Rightarrow x=446\)

Answer 7

a)(x - 149) : 35 = 270

=> x - 149     = 270 x 35

=> x - 149     = 9450

=> x              = 9450 + 149

=> x             = 9599

b)  (2009 - x) : 29 + 32 = 100

=> (2009 - x) : 29         = 100 - 32

=> (2009 - x) : 29         = 68

=> 2009 - x                   = 68 x 29

=> 2009 - x                   =1972

=> x                              = 2009 - 1972

=> x                              = 37

c)  x + 472 = 918

=> x           = 918 - 472

=> x           = 446