Question

Por favor,........... ​

Answer 1

A)

6/4=(6+x)/(4+8)

6*12=4*(6+x)

18=6+x

x=12

B)

x/2=(x+7)/(2+4)

6x=2*(x+7)

3x-x=7

x=7/2

C)

x/27=(x+42)/(27+36)

x/27=(x+42)/63

63x=27x+27*42

36x=27*42

x=3*42/4

x=3*21/2 =31,5