Answers

2014-07-13T15:47:19+08:00
-(3x+4y-(7x-8) - (3x-(-4y-(x-5))) -(3x+4y-7x+8) - (3x-(-4y-x+5)) (-3x-4y+7x-8) - (3x+4y+x-5) -3x-4y+7x-8 - 3x-4y-x+5 -4y+ (-4y) + (-8)+5 -8y-3
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