Question

b)(2 . x - 15)x11=11

dấu chấm là nhân

Answer 1

\(\left(2.x-15\right).11=11\)

\(\left(2.x-15\right)=11:11\)

\(2.x-15=1\)

\(2.x=1+15\)

\(2.x=16\)

      \(x=16:2\)

 \(x=8\)

Vậy \(x=8\)

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Answer 2

( 2x - 15 ) 11 = 11

2x - 15 = 11 : 11

2x - 15 = 1

2x = 1 + 15

2x = 16

x = 16 : 2

x = 8

Vậy x = 8

Answer 3

(2.x-15)=11:11

(2.x-15)=1

       2.x=1+15

       2.x=16

          x=16:2

          x=8

Vậy x=8

Answer 4

\(\left(2\cdot x-15\right)\cdot11=11\)

\(\Leftrightarrow2x-15=11:11\)

\(\Leftrightarrow2x-15=1\)

\(\Leftrightarrow2x=1+15\)

\(\Leftrightarrow2x=16\)

\(\Leftrightarrow x=16:8=2\)

Vậy x=2

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Answer 5

(2.x -15) x 11 =11

=> 2x - 15 = 11.11

=> 2x - 15 =1

=> 2x = 1 + 15

=> 2x=16

=> x = 16 : 8 

=> x =2