What is #2x+y -4# when #x=5# and #y = -3.2#?
1 Answer
May 5, 2016
2.8
Explanation:
Here 2x means
#2xxx# Substitute the given values into the expression
#2x+y-4=(2xx5)+(-3.2)-4# now +(-3.2) is equivalent to - 3.2
hence
#(2xx5)-3.2-4=10-7.2=2.8#
