Question

tìm x , bt:

Answer 1

25 - ( 25 - x ) = 12 + ( 42 - 65 ) 

25 - ( 25 - x ) = -1

       ( 25 - x ) = 25 + 1

       ( 25 - x ) = 26

                 x   = 25 - 26

                 x   =......

Answer 2

\(25-\left(25-x\right)=12+\left(42-65\right)\)

\(\Rightarrow25-25+x=12+42-65\)

\(\Rightarrow x=12+42-65+25-25=-11\)

Answer 3

25 - ( 25 - x ) = 12 + ( 42 - 65 )

x=12+(-13)=-1

tik mik nha

 

Answer 4

e: Ta có: \(25-\left(25-x\right)=12+\left(42-65\right)\)

\(\Leftrightarrow x=12+42-65\)

\(\Leftrightarrow x=-11\)