How do you solve #1 - 4a > 21#?
1 Answer
May 23, 2018
Explanation:
#"subtract 1 from both sides"#
#cancel(1)cancel(-1)-4a>21-1#
#-4a>20#
#"divide both sides by "-4#
#color(blue)"reversing the sign as a consequence"#
#a< -5" is the solution"#
#a in(-oo,-5)larrcolor(blue)"in interval notation"#
