Question

Subtract 5a-6b+7c from 13a-4b+8c

Answer 1

8a+2b+c

Explanation:

13a-4b+8c

-(5a-6b+7c)

simplify second equation: -5a+6b-7c (multiplying -1 by each number)

now solve

13a-4b+8c

-5a+6b-7c

= 13a-5a-4b+6b+8c-7c (combining both equations, and like terms)

solve:

8a+2b+1c

= 8a+2b+c