Jawabanmu

2014-08-31T10:23:50+07:00
2014-08-31T10:24:25+07:00
1. -4x kuadrat
2. 7x+5x-3+6 
= 12x-3
3. a-7a+5-2
= 6a+3
1. (-x) + 4x = 3x
2. 7x + 5x -3 +6 = 12x -3
3. = a-7a+5-2
= -6a +3