diket:A=-7x + 5 ,B=2x - 3 dit:A-B?

A = -7x + 5
B = 2x - 3
A - B = -7x + 5 - (2x - 3)
          = -7x + 5 - 2x + 3
          = -9x + 8

Penyelesaian :

Operasi bil.aljabar
___________________________
A = -7x + 5.
B = 2x - 3.

A - B,
-7x + 5 - 2x - 3
-7x -2x + 5 - 3
=> -9x - 2.

Salam Alaikum.