Question

Tìm x :

24 + x =30

15 + x = 20

12 + 1 = 14 - x

Answer 1

\(24+x=30\Rightarrow x=6\)

\(15+x=20\)

\(\Rightarrow x=5\)

\(12+1=14-x\)

\(\Rightarrow13=14-x\Rightarrow x=1\)

Answer 2

24 + x =30=>x=30-24=6

15 + x = 20=>x=20-15=5

12 + 1 = 14 - x=>=13=14-x

=>x=14-13

=>x=1

Answer 3

24 + x = 30

x = 30 - 24

x = 6

15 + x = 20

x = 20 - 15

x = 5

12 + 1 = 14 - x

13 = 14 - x

x = 14 - 13

x = 1

Answer 4

a ) 24 + x = 30

x = 30 - 24 

x = 6

b) 15 + x = 20

x = 20 - 15

x = 5

c) 12 + 1 = 14 - x

13 = 14 - x

x = 14 - 13

x = 1

Answer 5

24+x=30

     x=30-24

     x=6

15+x=20

      x=20-15

      x=5

12+1=14-x

    13=14-x

               x=14-13

               x=1

Answer 6

a ) 24 + x =30

x = 30 - 24

x = 6

b )  15 + x = 20

x = 20 - 15

x = 5

c ) 12 + 1 = 14 - x

     13 = 14 - x

     x = 14 - 13

     x = 1

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Answer 7

24 + x = 30

       x = 30-24

       x =  6

15+x = 20

     x  = 20 - 15

     x  = 5

12+1=14 - x

   13 = 14-x

14-x = 13

     x = 14-13

     x = 1

Answer 8

24 + x =30=>x=30-24=6

15 + x = 20=>x=20-15=5

12 + 1 = 14 - x=>=13=14-x

=>x=14-13

=>x=1