Question

Calcule o valor de x nas proporções:
A) 8/x = 4/5 b) 7/4 = x/8 c) 3/7 = 60/x
d) 6/x = 14/35

Answer 1

8 = 4 ; X = 8*5 ; X = 10 a)
x 5 4

7 = X ; X = 7*8 ; X = 14 b)
4 8 4

3 = 60 ; X = 7*60 ; X = 140 c)
7 X 3

6 = 14 ; X = 6*35 ; X = 15 d)
X 35 14