How do you simplify #-r + 6r - 5(6r -4)#?

1 Answer
Sep 22, 2015

Answer:

#=color(green)(−25r + 20 #

Explanation:

#−r+6r−color(green)((5)) * (6r−4)#

#color(green)((5))# is multiplied with each term within the bracket:

#=−r+6r−color(green)((5)) * (6r) −color(green)((5)) *(-4)#

#=−r+6r−30 r + 20 #

#=5r−30 r + 20 #

#=color(green)(−25r + 20 #