Question

2(x-4) +15 = 91

Answer 1

\(2\left(x-4\right)+15=91\)

\(2\left(x-4\right)=91-15\)

\(2\left(x-4\right)=76\)

\(x-4=76:2\)

\(x-4=38\)

\(x=38+4\)

\(x=42\)

Answer 2

\(2\left(x-4\right)+15=91\)

\(=>2x-8+15=91\)

\(=>2x+7=91\)

\(=>2x=84\)

\(=>x=42\)

Answer 3

2(x-4)=91-15

2(x-4)=76

  x-4 =76:2

  x-4 =38

  x   =38+4=42

Vậy x=42

Answer 4

2.( X - 4 ) + 15 =91 

2.( X - 4 )        =91 - 15

2.( X - 4 )        = 76

    X - 4          =  76 : 2

    X - 4           = 38 

         X           = 38 +4 

         X            = 42