Question

ME AJUDEM POR FAVOR ​

Answer 1

A)

X/3=24/6 (multiplica cruzado)

6x=72

x=72/6

x=12

B)

4/2x=6/x+2 (multiplica cruzado)

4x+8=12x

8=12x-4x

8=8x

8/8=x

1=x ou x=1 (mesma coisa)

C)

2-2x/3=1/3

6-6x=3x

6=3x+6x

6/9=x

0,666...=x

D)

x-4/x+6=9/24 (multiplica cruzado)

24x-96=9x+54

24x-9x=54+96

15x=150

x=150/15

x=10