Answer:
38.5
Step-by-step explanation:
yes 1+1=2
You cant add a negative number.
If you add a negative number you will not have a full answer.
1.solution
=2a+5a
=7a
2.solution
=12x-3x
=9x
3.solution
=3p+2p-p
=5p-p
=4p
Hope it helps you.