解比例36分之78=x分之16 和0.7分之之0.2=x分之0.9

问题描述:

解比例36分之78=x分之16 和0.7分之之0.2=x分之0.9

X=78×16÷36=104/3
X=18/7

36分之78=x分之16
78x=36*16
x=576/78
x=96/13
0.7分之0.2=x分之0.9
0.2x=0.7*0.9
0.2x=0.63
x=63/20
x=3.15

78/36=16/x
78x=36x16
x=(36*16)/78
x=96/13
0.2/0.7=0.9/x
0.2x=0.63
x=63/20

36分之78=x分之16
78x=36×16
x=36×16÷78
x=7又13分之5
0.7分之之0.2=x分之0.9
0.2x=0.7×0.9
x=0.7×0.9÷0.2
x=3.15