Question

Tentukan pengurangan bentuk aljabar berikut.
a.-3m+4n-6 dengan 7n-8m+10
b.15a+7b-5c dengan -11a-12b-13d

Answer 1

A. ( -3m + 4n - 6 )- (7n - 8m + 10 )
-3m + 4n - 6 - 7n + 8m - 10 
= 5m - 3n - 16

b. (15a + 7b - 5c) - (-11a -12b - 13d)
15a + 7b - 5c + 11a + 12a + 13d
= 26a + 19b + 8d

Answer 2

A. (-3m+4n-6)-(7n-8m+10)
   = -3m+4n-6-7n+8m-10
   = -3m+8m+4n-7n-6-10
   = 5m-3n-16
b. (15a+7b-5c)-(-11a-12b-13d)
   = 15a+7b-5c+11a+12b+13d
   = 15a+11a+7b+12b-5c+13d
   = 26a+19b-5c+13d