Răspunsuri

2014-05-27T22:25:09+03:00
12+16x-12=18x-6
16x-18x=-6-12
-2x=-18
2x=18
x=9

15-21+42x=45x-18
-6+42x=45x-18
42x-45x=-18+6
-3x=-12
3x=12
x=4
  • Utilizator Brainly
2014-05-27T22:26:40+03:00
12 + 4( 4x - 3) = 6( 3x - 1 )
12+16x-12=18-6
12x=12
x=1

15- 7 ( 3 - 6x ) = 9 ( 5x -2 )
15-21+42x=45x-18
-6+18=3x
12=3x
x=4