Question

a)2x-40=0

 

 

Answer 1

a)2x-40=0

2x=0+40=40

=>x=40:2=20

Answer 2

\(\Leftrightarrow2x=40\)

\(\Leftrightarrow x=20\)

Answer 3

a)2x-40=0

\(\Leftrightarrow2x=40\Leftrightarrow x=20\)

Answer 4

a)2x-40=0

2x=0+40=40

=>x=40:2=20

Answer 5

\(2\times-40=0\)

\(2\times=0+40=40\)

\(=>x=40:2=20\)

Answer 6

x=20