Respostas

2013-06-04T20:15:40-03:00

2x-4-8=4x ==> 4x-2x=-12 ==> 2x=-12 ==> x=-6

 

360+36x=30x ==> 36x-30x=-360 ==> 6x=-360 ==> x= - 360/6 => x=60

 

2x+5-5x=-1 ==> -3x=-6 ==> x=2

2 5 2
2013-06-04T20:16:27-03:00

2x-4-8=4x

-2x=12

x=12/-2

x=-6

 

360+36x=30x

6x=-360

x=-360/6

x=-60

 

2x+5-5x=-1

-3x=-6

x=-6/-3

x=2

2 5 2