Question

Complete as igualdades de modo a obter as proporçoes:
A) 5/8 = 3,5/
B) 6/10=15/X
C) 0,4/0,6=12/X
D) X/3=8/12
me ajudeemm hihi

Answer 1

A) 5/8 = 3,5/x => 5.x = 8.4,5 => 5.x = 36 => x = 36 / 5 => x =  7,2
B)  6/10 = 15/x => 6.x = 10.15 => 6.x = 150 => x = 150 / 6 => x  = 25

C) 0,4/0,6 = 12/x => 0,4.x = 0,6 . 12 => 0,4.x = 7,2 => x = 7,2/0,4 => x = 18

D) x/3 = 8/12 => 12.x = 3.8 => 12.x = 24 => x = 24/12 => x = 2