Jawabanmu

2014-03-10T16:49:32+07:00
2x+1+2x+2+2x+3+2x+4+2x+5 = 4275
10x+15=4275
10x=4275-15
10x=4250
x=425


jadikan jawaban terbaik ya
2014-03-10T17:11:32+07:00
(2x+1) + (2x+2) + (2x+3) + (2x+4) + (2x+5) = 4275
10x + 15 = 4275
10x        = 4275 - 15
  x          = 4260 : 10
  x          = 426