Question

resolva as seguintes proporções

a) 1/3x = 2/x+1

b) x-5/x-3= 3/5

c) 7/2x+1= 5/2x+1

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Answer 1

Resposta:

Explicação passo-a-passo:

a) 1/3x = 2/x+1

x+1 = 6x

-5x = -1

x = 1/5

b) x-5/x-3= 3/5

5x - 25 = 3x - 9

5x - 3x = - 9 + 25

2x = 16

x = 8

c) 7/2x+1= 5/2x+1

14x + 7 = 10x +5

14x - 10x = 5 - 7

4x = -2

x = -2/4

x = -1/2