\(x\cdot4+\frac{1}{2}\cdot x=55,35\)
\(=x\left(4+\frac{1}{2}\right)=55,35\)
\(=x\cdot4,5=55,35\)
\(\Rightarrow x=55,35:4,5\)
\(\Rightarrow x=12,3\)
\(x.4+\frac{1}{2}.x=55,35\)
\(\Leftrightarrow x.\left(4+\frac{1}{2}\right)=55,35\)
\(\Leftrightarrow x.\frac{9}{2}=55,35\)
\(\Leftrightarrow x=55,35:\frac{9}{2}\)
\(\Leftrightarrow x=\frac{123}{10}=12,3\)
(Tíck cho mìk vs nha!)
\(x\times4+\frac{1}{2}\times x=55,35\)
\(x\times\left(4+\frac{1}{2}\right)=55,35\)
\(x\times\left(\frac{8}{2}+\frac{1}{2}\right)=55,35\)
\(x\times\frac{9}{2}=55,35\)
\(x\times4,5=55,35\)
\(x=55,35\div4,5\)
\(x=12,3\)
x x 4 + ½ x x = 55,35
x x 4 + 0,5 x x = 55,35
x x (4 + 0,5)= 55,35
x x 4,5= 55,35
x = 55,35 : 4,5
x = 12,3
