(13.2-x+2.8)除以3=5

(13.2-x+2.8)除以3=5


13.2-x+2.8=5×3
13.2-x+2.8=15
x=13.2+2.8-15
x=1
 ;



20除以x等於8/13怎麼解


x=20X13/8
x=65/2