Question

Tìm x

2x-12=18

317-(x-69)=286

10+2x=2^3×3^2

Giúp mình nha thanks

Answer 1

a) 2x-12=18                   x=3

Answer 2

2x - 12 = 18................................

2x = 30 ........................................

x = 15.....................................

Answer 3

2x - 12 = 18................................

2x = 30 ........................................

x = 15.....................................

Answer 4

2x - 12 = 18................................

2x = 30 ........................................

x = 15.....................................

Answer 5

2x - 12 = 18................................

2x = 30 ........................................

x = 15.....................................

Answer 6

2x - 12 = 18................................

2x = 30 ........................................

x = 15.....................................

Answer 7

2x - 12 = 18................................

2x = 30 ........................................

x = 15.....................................

Answer 8

2x - 12 = 18................................

2x = 30 ........................................

x = 15.....................................

Answer 9

2x - 12 = 18................................

2x = 30 ........................................

x = 15.....................................

Answer 10

2x - 12 = 18

=> 2x = 18 + 12 = 30

=> x = 30 : 2 = 15

Answer 11

317 - ( x - 69 ) = 286

=> x - 69 = 317 - 286 = 31

=> x = 31 + 69 = 100

Answer 12

\(10+2x=2^3.3^2\)

\(\Rightarrow10+2x=8.9=72\)

\(\Rightarrow2x=72-10=62\)

\(\Rightarrow x=62:2=31\)

Answer 13

\(317-\left(x-69\right)=286\)

\(\Rightarrow x-69=317-286\)

\(\Rightarrow x-69=31\)

\(\Rightarrow x=31+69\)

\(\Rightarrow x=100\)

Answer 14

2x - 12 = 18...........................

2x = 30............................

x = 15.................................

Answer 15

2x - 12 = 18...........................

2x = 30............................

x = 15.................................

Answer 16

2x - 12 = 18...........................

2x = 30............................

x = 15.................................

Answer 17

2x - 12 = 18...........................

2x = 30............................

x = 15.................................

Answer 18

2x - 12 = 18...........................

2x = 30............................

x = 15.................................