Question

12+(5+x)=20

Answer 1

12 + ( 5 + x ) = 20
12 + 5 + x = 20
17 + x = 20
       x = 20 - 17
       x = 3
Tích nha
 

Answer 2

12 + (5 +x) = 20

        5  +x   = 20 - 12 = 8

             x    =  8- 5

            x      = 3

Answer 3

\(12+\left(5+x\right)=20\)

\(\Rightarrow5+x=20-12=8\)

\(\Rightarrow x=8-5=3\)

Ủng hộ mk nka!!!^_^

Answer 4

12+[5+8]=20

Answer 5

12+(5+x)=20

(5+x)     = 20-12

5+x       =8

x           =8-5

x           = 3

Answer 6

12+[5+3]=20

Answer 7

12+(5+x)=20

5+x=20-12

5+x=8

x=8-5

x=3

Answer 8

12+[5+3]=20

Answer 9

12+[5+3]=20
 

Answer 10

12 + ( 5 + x ) = 20 

5 + x = 20 - 12 = 8

x       = 8 - 5

x       = 3

k mk nha như,thanks nhìu

Answer 11

12 + ( 5 + x ) = 20

12 + 5 + x = 20

      17 + x = 20

              x = 20 - 17

              x = 3