Question

Determinati termenul necunoscut si scriet-l sub forma unei fractii zecimale
a) 10/x=1/9 b)x/2=3/5 d)0,2/x=1,75/2 e)1,82/6,3=x/8 f)1,(3)/x=1/9 g01,2/x=72/2
h)x/2=3,(4)/5 i)2,(5)/ 0,05=46/x j)3,3(6)/0,06=45/x

Answer 1

a) 10/x = 1/9 => x= 90
b) x/2=3/5 => x= (3*2)/5= 6/5=1,2
d) 0,2/x=1,75/2 => x= (0,2*2)/1,75=0,228
e) 1,82/6,3=x/8 => x= (8*1,82)/ 6,3 = 2,3(1)
f) 1,(3)/x=1/9 => 4/3x = 1/9 => 3x=36 => =12
g) 1,2/x=72/2 => x=(2*1,2)/72 = 0,0(3)
h) x/2=3,(4)/5 = > x/2= 31/45 => x=(2*31)/45 = 1,3(7)
i) 2300/45=46/ => x= (46*45)/ 2300 = 0,9
j) 30300/540=45/x => x= (450*45)/30300=0,801