X x 18 : 4 = 72 : 4
X x 4,5 = 18
X = 18 : 4,5
X = 4
Học vui !
x*18:4=72:4
x*18:4=18
x*18 =18*4
x*18 = 72
x = 72/18
x = 4
Vậy x = 4
X x 18 :4= 72 : 4
X x 18 :4= 18
X x18 = 18 x 4
X x 18 = 72
X =72 : 18
X = 4
X x 18 : 4 = 18
X x 18 = 18 x 4
X x 18 = 72
X = 72 : 18 = 4
vậy X = 4
\(18x:4=72:4\)
\(\Rightarrow18x=72\)
\(\Rightarrow x=4\)
\(x\times18\div4=72\div4\)
\(\Leftrightarrow x\times18\div4=18\)
\(\Leftrightarrow x\times18=18\times4\)
\(\Leftrightarrow x=\frac{18\times4}{18}\)
\(\Leftrightarrow x=4\)
\(\text{Vậy }x=4\)
\(x\times18\div4=72\div4\)
\(x\times18=72\)
\(x=72\div18\)
\(x=4\)