Jawabanmu

2014-08-20T16:32:41+07:00
A) (-3m+4n-6) + (7n-8m+10) = (-3m-8m+4n+7n-6+10) = -11m+11n+4

b) (15a+7b-5c) +(-11a-12b+13) = (-15a-11a+7b-12b-5c+13) = -26a-5b-5c+13
2 3 2
2014-08-20T16:33:08+07:00
A. ( -3m + 4n - 6 ) + ( 7n - 8m + 10 ) = -3m + 4n - 6 + 7n - 8m + 10 = 11n - 11m + 4
b. ( 15a + 7b - 5c ) + ( -11a - 12b + 13 ) = 15a + 7b - 5c - 11a - 12b + 13 = 4a -5b -5c + 13
1 1 1