Question

Tìm số a,b,c,d biết

ab,c*d,d=44,55

Answer 1

\(\overline{ab,c}xdx1,1=40,5x1,1\Rightarrow\overline{ab,c}xd=40,5=13,5xx3\)

\(\Rightarrow\overline{ab,c}=13,5\) ; \(d=3\)

Answer 2

\(a b , c × d , d = 44 , 55 \)

\(a b , c × d × 1 , 1 = 44 , 55\)

\(a b , c × d = 44 , 55 : 1 , 1=40 , 5\)

\(a b , c × d = 13 , 5 × 3\)

\(=>a b , c = 13 , 5 \)

Vậy \(a=1 ; b=3 ; c=5 ; d=3\)

Answer 3

ab,c×d,d=44,55

=ab,c×d×1,1=40,5×1,1

=ab,c×d=13,5×3

=ab,c=13,5;d=3