Question

2x X-138=2³x 2²

Answer 1

`2x xx(-138)=2^3 xx 2^2`

`=>2x xx (-138)=32`

`=>2x =32+138`

`=>2x=170`

`=>x=170/2`

`=>x=85`

Answer 2

giúp zui zới

Answer 3

\(2x - 138 = 2^3 .2^2<=>2x-138=8.4\) 

\(<=>2x-138=32\) 

\(<=>2x=138+32\) 

\(<=>2x=170\) 

\(<=>x=170:2\) 

\(<=>x =85\)

Answer 4

\(2x-138=2^3\times2^2\)

\(2x-138=2\)

          \(2x=2+138\)

          \(2x=140\)

            \(x=140:2\)

            \(x=70\)