Question

b. 20 – 2 (x+4) =4

 

Answer 1

\(\Leftrightarrow2\left(x+4\right)=16\)

hay x=4

Answer 2

20 - 2 (x + 4) = 4

2 (x + 4) = 20 - 4

2 (x + 4) = 16

x + 4 = 16 : 2

x + 4 = 8

x = 8 - 4

x = 4

Answer 3

=4

 

Answer 4

\(20-2\left(x+4\right)=4\)

        \(2\left(x+4\right)=20-4\)

        \(2\left(x+4\right)=16\)

             \(x+4=16:2\)

             \(x+4=8\)

             \(x\)       \(=8-4\)

            \(x\)        \(=4\)