Question

X x 0,5+x :0,25 =4,05

Answer 1

\(x.0,5+x:0,25=4,05\)

\(x.0,5+x.4=4,05\)

\(x.\left(0,5+4\right)=4,05\)

\(x.4,5=4,05\)

\(\Rightarrow x=0,9\)

PP/ss: Hoq chắc ạ ((:

Answer 2

X x 0,5 + X : 0,25 = 4,05

X x 1/2 + X x 4 = 4,05

X x (1/2 + 4) = 4,05

X x 9/2 = 4,05

X = 405/100 : 9/2

X = 81/20 x 2/9

X = 9/10

Answer 3

Trả lời :..................................................

x = 0,9..................................................

Hk tốt,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

Học sinh giỏi 6A