# How do you evaluate the following algebraic expression at b=-1 and simplify your answer #-3(b-1)-4(b-3)#?

##### 1 Answer

Feb 18, 2017

#### Answer:

#### Explanation:

#"Substitute "b=-1" into the expression"#

#rArr-3(color(red)(-1)-1)-4(color(red)(-1)-3)#

#=(-3xx-2)+(-4xx-4)#

#=6+16#

#=22#