Question

Nas Figuras, Determine x:

Answer 1

a) 8/x = 15/5

15x = 8 * 5
15x = 40
x = 40/15
x = 8/3


b) 4 + x / 10 = 10/4
4(4 + x) = 10 * 10
16 + 4x = 100
4x = 100 - 16
4x = 84
x = 84/4
x = 21