Jawabanmu

2014-09-11T18:08:51+07:00
Cara nya
min  bertemu min = plus
min bertemu plus = min
plus bertemu min = min
plus bertemu plus = plus
jadi aturan main nya gini ................
1. -3m + 4n - 6 - (7n - 8m + 10 ) = ( -3m + 8m ) + ( 4n - 7n ) + ( -6 - 10 ) = 5m - 3n - 16

2. 15a + 7b - 5c - ( -11a - 12b + 13d ) = ( 15a + 22a ) + ( 7b + 12b ) + (-5c) + (-13d)
= 37a + 19b - 5c - 13d
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