Question

From the sum of a-3b+12 and -a+15 subtract 4a+b-30.​

Answer 1

Answer:

-4a - 4b + 57

Step-by-step explanation:

We have to find the following: {(a-3b+12) + (-a+15)} - (4a+b-30)  

= {a-3b+12 -a+15} - (4a+b-30)

= ( -3b + 27) - (4a+b-30)

= -3b + 27 - 4a -b+30

= -4a - 4b + 57

Answer 2

I think this is correct. Hope this helps you.