Question

considerando que as retas r, s e t são paralelas, aplique o teorema de tales e determine o valor de x:​

Answer 1

Resposta:

Explicação passo-a-passo:

$\frac{10}{15} = \frac{3x + 1}{5x - 2}$

10(5x - 2) = 15(3x + 1)

50x - 20 = 45x + 15

50x - 45x = 15 + 20

5x = 35

x = 35/5

x = 7

$\frac{2x-2}{3x+1} = \frac{12}{21}$

21(2x - 2) = 12(3x + 1)

42x - 42= 36x + 12

42x - 36x = 12 + 42

6x = 54

x = 54 / 6

x = 9