Question

найдите х в пропорции 3х+1,2/2,8=5,1/3,4 2)6,3/3,5=2х+1,9/5,5

Answer 1

N 1
2,8•5,1 = 3,4( 3x + 1,2 )
14,28 = 10,2x + 4,08
10,2x = 10,2
X = 1
N 2
6,3•5,5 = ( 2x + 1,9 )•3,5
34,65 = 7x + 6,65
7x = 28
X = 4