Question

calcule o valor de x nas proporções:

Answer 1

a)
x+2/3 = 15/9
9x+18 = 45
9x = 45-18
9x = 27
x = 27/9
x = 3

b)
x+2/6 = x-1/2
2x+4 = 6x-6
6x-2x = 4+6
4x = 10
x = 10/4
x = 2,5

c)
2x/9 = x-6/5
10x = 9x-54
10x-9x = -54
x = -54


d)
2/4 = x/32
4x = 64
x = 64/4
x = 16