Question

2.(5+3x)+x=31

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Answer 1

2.(5+3x)+x=31

10+6x+x    =31

7x              =21

  x              = 3

Answer 2

2.(5+3x)+x=31

=> 10+6x+x=31

=>10+7x=31

=>7x=31-10=21

=>x=3 

#HọcTốt

Answer 3

2.(5+3x)+x=31

10+6x+x=31 

10+7x=31

  7x=  31-10

7x  =21 

x=21:7

x=3

Answer 4

Ta có : \(2.\left(5+3.x\right)+x=31\)

           \(\Leftrightarrow10+6.x+x=31\)

            \(\Leftrightarrow10+7.x=31\)

            \(\Leftrightarrow7.x=31-10\)

            \(\Leftrightarrow7.x=21\)

              \(\Leftrightarrow x=21:7\)

               \(\Leftrightarrow x=3\)

Vậy \(x=3\)

STUDY WELL !

Answer 5

2.(5+3x)+x=31

=>10+6x+x=31

=>10+7x=31

=>7x=21

=>x=3

hok tốt

#Chino

Answer 6

2.(5+3x)+x=31

=> 10 + 6x + x = 31

=> 10 + 7x = 31

=> 7x = 31 - 10

=> 7x = 21

=> x = 21 : 7

=> x = 3

Answer 7

2 . ( 5 + 3x ) + x = 31
=> 10 + 7x = 31
=> 7x = 31 - 10
=> 7x = 21 
=> x = 21 : 7
=> x = 3
HOK TỐT

Answer 8

\(2.\left(5+3x\right)+x=31\)

\(\Rightarrow10+6x+x=31\)

\(\Rightarrow10+7x=31\)

\(\Rightarrow7x=21\)

\(\Rightarrow x=3\)