How do you combine #3x+ -5+(-7x)+2#?

1 Answer
Jul 7, 2018

Answer:

#-4x - 3#

Explanation:

#3x + -5 + (-7x) + 2#

Adding a negative number is the same thing as without the addition sign, so it becomes:
#3x - 5 - 7x + 2#

Color-code like terms:
#color(red)(3x) quadcolor(blue)(-quad5) quadcolor(red)(-quad7x) quadcolor(blue)(+quad2)#

Combine like terms:
#-4x - 3#

Hope this helps!