0.5/X=3/0.8解:3X=0.5*0.83Ⅹ=0.4Ⅹ=0.4÷3Ⅹ=2/15
x分之0.5等于3/0.8x=0.5/(3/0.8)=0.5x0.8/3=2/15x的值是15分之2
2.4÷(x÷0.5)=0.82.4÷0.8=x÷0.53=x÷0.5x=3*0.5x=1.5
0.5/x=3/0.83X=0.4X=2/15
0.5/x=3/0.8, 0.5*0.8=3x, x=0.4/3=2/15.
1.6
x÷0.8=3 x=0.8X3 x=2.4
0.5/X=3/0.83X=0.4X=0.4/3X=2/15
0.8÷0.5=1.6,竖式计算图片如下:
(1) 0.5 X = 3 0.8 , 3X=0.5*0.8,3X÷3=0.4÷3, X= 2 15 ;(2)X:3.25= 1 5 : 5 4 , 5 4 X=3.25* 1 5 , 5 4 X* 4 5 =0.65* 4 5 , X=0.52.(3) 3 4 :X=3:12, 3X=12* 3 4 ,3X÷3=9÷3, X=3;(4) 0.7 X = 14 5 , 14X=0.7*5, 14X÷14=3.5÷14, X=0.25.