Răspunsuri

2014-05-08T16:38:32+03:00
A) 4(5x-10-3x+12)+5x-11=6x+12-1
4(2x+2)+5x-11=6x+11
8x+8+5x-11=6x+11
8x+5x-6x=11+11-8
7x=14
x= 14 supra 7
x=2
b) 6x-21-5x+10-3=2x-14+7
6x-5x-2x=-14+7+21-10
-1x=4
2 4 2