Jawabanmu

2014-08-27T05:28:59+07:00
2(3x-7)+ 2(4-2x)
= 6x-14 + 8-4x
= 6x-4x -14+8
= 2x -6
keliling persegi panjang adalah 2x -6
2014-08-27T08:32:02+07:00
2(3x-7) + 2(4-2x) = 6x-14 + 8 -4x
= 2x -6