Question

tim x biet:0.5*[0,5*(x-0,5)-0,5]=0,5

Answer 1

0,5[0,5(x-0,5)-0,5]=0,5

0,5(x-0,5)-0,5=0,5:0,5

0,5(x-0,5)-0,5=1

0,5(x-0,5)=1+0,5

0,5(x-0,5)=1,5

x-0,5=1,5:0,5

x-0,5=3

x=3+0,5

x=3,5

Vậy x = 3,5

Answer 2

<=> 0.5 *(x-0.5)-0.5 = 1

<=> 0.5 * (x-0.5) = 1.5

<=> x-0.5 = 3

<=> x=3.5

Answer 3

\(0,5\times\left[0,5\times\left(x-0,5\right)-0,5\right]=0,5.\)

\(\Leftrightarrow0,5\times\left(x-0,5\right)-0,5=1\)

\(\Leftrightarrow0,5\times\left(x-0,5\right)=1,5\)

\(\Leftrightarrow x-0,5=3\)

\(\Leftrightarrow x=3,5\)