(12.x)=180
12.x=180
x=15
Vậy x=15
\(\Rightarrow\left(15.x\right)=3.60=180\Rightarrow x=180\div15=12\)
\(\left(15\cdot x\right):60=3\)
\(\Leftrightarrow x\cdot15=180\)
hay x=12
À NHẦM MIK SỬA LẠI
15x=3.60
15x=180
x=180:50
x=18/5
( 15.x) : 60= 3
15.x = 3x60
15.x = 180
x = 180:15
x = 12
( 15.x) : 60= 3
15.x = 3x60
15.x = 180
x = 180:15
x = 12