Question

2x(2+x)-11=6:3+7x5

Answer 1

2 x ( 2 + X ) - 11 = 6 : 3 + 7 x 5

2 x ( 2 + X ) - 11 = 2 + 35

2 x ( 2 + X ) - 11 = 37

2 x ( 2 + X ) = 37 + 11

2 x ( 2 + X ) = 48

      2 + X = 48 : 2

      2 + X = 24

             X = 24 - 2

             X = 22

Answer 2

                                          Bài làm :

\(2\times\left(2+x\right)-11=6\div3+7\times5\)

\(\Leftrightarrow2\times2+2\times x=2+35+11\)

\(\Leftrightarrow4+2\times x=48\)

\(\Leftrightarrow2\times x=48-4=44\)

\(\Leftrightarrow x=44\div2=22\)

Vậy x=22

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Answer 3

Bài làm 

\(2\left(2+x\right)-11=6:3+7.5\)

\(\Leftrightarrow4+2x-11=2+35\Leftrightarrow-7+2x=37\Leftrightarrow2x=42\Leftrightarrow x=21\)