Question

2- Determine o valor de x nas proporções:​

Answer 1

Resposta:

a) $\frac{x}{6}=\frac{32}{48}$

48x=192

x=$\frac{192}{48}$

x=4

b) $\frac{1}{7} =\frac{x-6}{49}$

7x-42=49

7x=49+42

7x=91

x=$\frac{91}{7}$

x=13

c) $\frac{2x+1}{10}= \frac{21}{30}$

60x+30=210

60x=210-30

60x=180

x=$\frac{180}{60}$

x=3

d) $\frac{x-3}{2x+1}= \frac{4}{5}$

5x-15=8x+4

8x-5x=-15-4

3x=-19

x=$\frac{-19}{3}$