1) 2x - 3 + 12x - 8= 2x + 12x - 3 - 8= 14x - 11
2) 8x - 4ax + 4ax - 5k + ka - 5k= 8x + ka - 10k= 8x + ka - 10k
3) -4m + 4mk - km - mk= -4m - km + 4mk - mk= -5m + 3mk
1) 2x - 3 + 12x - 8
= 2x + 12x - 3 - 8
= 14x - 11
2) 8x - 4ax + 4ax - 5k + ka - 5k
= 8x + ka - 10k
= 8x + ka - 10k
3) -4m + 4mk - km - mk
= -4m - km + 4mk - mk
= -5m + 3mk