Question

(x-1)*0,5=3 7/9 помогите решить

Answer 1

$0,5(x-1)=3 frac{7}{9}\\0,5x-0,5= frac{34}{9}\\0,5x= frac{34}{9} + frac{5}{10}\\0,5x=frac{385}{90}\x=frac{385}{90}*frac{10}{5}\\x=frac{3850}{450}=frac{77}{9}\\x=8 frac{5}{9}$

Answer 2

( Х - 1 ) • 0,5 = 3 7/9
Х - 1 = 34/9 : 1/2
Х - 1 = 68/9
Х - 1 = 7 5/9
Х = 7 5/9 + 1
Х = 8 5/9