Question

( 4x - 16 ) * 4 +12 = 28

Hỏi x bằng bao nhiêu

Answer 1

Ta có:\(\left(4x-16\right).4+12=28\)

\(\Rightarrow\left(4x-16\right).4=28-12=16\)

\(\Rightarrow4x-16=16:4=4\)

\(\Rightarrow4x=4+16=20\)

\(\Rightarrow x=20:4=5\)

Answer 2

\(\left(4x-16\right)\cdot4+12=28\)

\(\left(4x-16\right)\cdot4=28-12\)

\(\left(4x-16\right)\cdot4=16\)

\(4x-16=16\div4\)

\(4x-16=4\)

\(4x=4+16\)

\(4x=20\)

\(\Rightarrow x=5\)

Answer 3

\(\left(4x-16\right)\cdot4+12=28\)

\(\Leftrightarrow\left(4x-16\right)\cdot4=28-12\)

\(\Leftrightarrow\left(4x-16\right)\cdot4=16\)

\(\Leftrightarrow4x-16=16\div4\)

\(\Leftrightarrow4x-16=4\)

\(\Leftrightarrow4x=4+16\)

\(\Leftrightarrow4x=20\)

\(\Leftrightarrow x=20\div4\)

\(\Leftrightarrow x=5\)

Vậy ...

Answer 4

( 4x - 16 ) * 4 +12 = 28

(4x-16)*4=28-12

(4x-16)*4=16

4x-16=4

4x = 20

x=5

Answer 5

( 4 x - 16 ) x 4 + 12 = 28

( 4 x - 6 ) x 4 = 28 - 12 

( 4 x - 6 ) x 4 = 16 

4 x - 16 = 4 

4 x = 16 + 4 

4 x = 20 

x = 20 : 4 

x = 5 

Vậy x = 5