Question

podem me ajudar com essas questões ? :-(

Answer 1

2)
x/4 = 6/5
5x = 6 . 4
5x = 24
x = 24/5 ==> x = 4,8

3)
y/3 = 6/2
2y = 6 . 3
2y = 18
y = 18/2 ==> y = 9

4)
(2x + 6)/6 = 8/5
5.(2x + 6) = 6 . 8
10x + 30 = 48
10x = 48 - 30
10x = 18
x = 18/10 ==> x = 1,8

Answer 2

2) $\frac{x}{4} = \frac{6}{5} =\ \textgreater \ 5x=24 =\ \textgreater \ x = 4,8 \\ \frac{2}{6} = \frac{3}{y} =\ \textgreater \ 2y=18=\ \textgreater \ y=9 \\ \frac{5}{6} = \frac{8}{2x+6} =\ \textgreater \ 10x+30=48=\ \textgreater \ 10x=18=\ \textgreater \ x=1,8$