Question

Me ajudem por favor?

Answer 1

1)a) 2/4 = 3/x

2x= 12

X= 6

B) 4/12= x/21

X = 7

C) x/14 = 9/12

12x = 126

X= 10,5

D) x/9=8/12

12x= 72

X=6

E) x/4= 9/18

X= 2

F) 10/15 = 3x+1/5x-2

50x - 20 = 45x + 15

5x = 35

X= 7