Question

Calcule valor de x nas seguintes figuras?

Answer 1

a)
$\frac{2}{5} = \frac{5}{5 + x}$
$10 + 2x = 25$
$2x = 15$
x = 7,5

b)
3/x = 8/24
8x = 72
x = 72/8
x = 9

c)
10/× = 14/6+c
14x = 60 + 10x
4x = 60
x = 60/4
x = 15

d)
4/1 = x/4
x = 16
(16 - 4 = 12)