Question

x  *  0,5 = 1,05 - x

Answer 1

x * 0 , 5 = 1 , 05 - x

x * 0 , 5 + x = 1 , 05

x * ( 0 , 5 + 1 ) = 1 , 05

x * 1 , 5           = 1 , 05

   x                   = 0 , 7

Answer 2

x * 0 , 5 = 1 , 05 - x

x * 0 , 5 + x = 1 , 05

x * ( 0 , 5 + 1 ) = 1 , 05

x * 1 , 5           = 1 , 05

   x                   = 0 , 7

Answer 3

x*0,5 = 1,05 -x 

x*0,5+x=1,05

x*(0,5+1)=1,05

x*1,5=1,05

x=1,05 : 1,5

x=0,7

vậy x=0,7