Answer:
7a+2b+5a+b= 12a+3b or 35a times/plus 2b
Step-by-step explanation:
First, we combine the variables that are the same:
7a+5a=12
2b+1b=3
Since we cannot combine those two terms together then that is our answer.
If this is multiplication you would do the same thing:
Combine the like variables together:
7a times 5a equals 35a
2b time 1b equals 2b
Our answer is:
35a times/plus 2b