Odpowiedzi

2010-03-18T19:15:33+01:00
4(4a-7b)-7(3a-5b)-2(6b-5a)= 16a-28b-21a+35b-12b+10a=5a-5b
0,5(8x-12y)+0,6(5x-15y)=4x-6y+3x-9y=7x-15y
2010-03-18T19:16:39+01:00
4(4a-7b)-7(3a-5b)-2(6b-5a)=16a-28b-21a+35b-12b+10a=5a-5b

0,5(8x-12y)+0,6(5x-15y)=4x-6y+3x-9y=7x-15y
2010-03-18T19:19:10+01:00
4(4a-7b)-7(3a-5b)-2(6b-5a)=16a-28b-21a+35b-12b+10a=5a-5b





0,5(8x-12y)+0,6(5x-15y)=4x-6y+3x-9y=7x-15y