## Algebra: A Combined Approach (4th Edition)

Answer of Part (a) = $-12$ Answer of Part (b)= $-9$
Part (a) $3+(-7)+(-8)=$ $3-7-8=$ $-4-8=$ $-12=$ Part (b) $[7+(-10)]+[-2+(-4)]=$ $(7-10)+(-2-4)=$ $-3+(-6)=$ $-9=$