Answer:
5-4x
Step-by-step explanation:
so when 10 - 3x + 2 is subtracted from 8 - 7x + 9
an important thing here is to remember the brackets as you minus something,
17 - 7x - ( 12 - 3x)
which gives 17 - 7x -12 + 3x
which then the difference yields .... 5 - 4x
