Answer:
Step-by-step explanation:
No, it's not always true
Answer:

Step-by-step explanation:
Here we gonna use the identity -

So using the identity here,

Easy
sub
remmeber that (-)(-)=(+)
3-2(-7)-(-7)
3+14+7
24
answer si 24
Well u can't get division but division is the opposite of multiplication so if it was 12 divided by 2 it would be 6 because 6 times 2 is 12