How do you evaluate 7d – 5c if d = 7 and c = 3?

2 Answers
Mar 27, 2018

Answer:

#34#

Explanation:

Given: #7d-5c#

Plug in #d=7,c=3#, we get,

#7*7-5*3#

#=49-15#

#=34#

Mar 27, 2018

Answer:

49-15=34

Explanation:

First begin by substituting each variable for the number amount that is given (7 in for d and 3 for c). It will end up looking something like this:

#7(7)-5(3) or (7*7)-(5*3)#

It's just simple multiplication and subtraction from here on out:

#7*7=49 and -5*3=15#

So all simplified we get:

#49-15=34#