Answers

2015-06-20T01:20:14+08:00
1.) 3x-{x-y)+(6x-8+6y)-5y
3x-x+y+6x-8+y
2x+6x+y-8+y
8x+2y-8

2.) -2x+{3[-4x-4-x+2y]-2y
-2x+[-12x-12-x+2y]-2y
-2x+-13x-12-2y
-15x-2y-12
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