Question

tìm x

8,55×x+x×1,45=24,2

x:0,25+x×5=2,7

 

x-27,2=32,9+8,12

 

Answer 1

8, 55 . x + x . 1, 45 = 24, 2

x . ( 8, 55 + 1, 45 ) = 24, 2

x . 10 = 24, 2

x = 24, 2 : 10

x = 2, 42

Answer 2

x : 0, 25 + x . 5 = 2, 7

x . 4 + x . 5 = 2, 7

x . ( 4 + 5 ) = 2, 7

x . 9 = 2, 7

x = 2, 7 : 9

x = 3