How do you solve #-29.5= 5r - 4r#?

2 Answers
smendyka
Nov 28, 2016

#r = -29.5#

Explanation:

Perform the necessary mathematics to solve for #r#:

#-29.5 = (5 - 4)r#

#-29.5 = 1*r#

#-29.5 = r#

Angie · Stefan V.
Nov 28, 2016

#r = -29.5#

Explanation:

Don't let the negative decimal scare you on this one!

Since #5r# is the same as

#r+r+r+r+r#

and #4r# is the same as

#r+r+r+r#

this question is as simple as addition and subtraction. If the variable is the same, you can just add or subtract. (Unless there's a different exponent, but don't worry about that at all yet.)

#r+r+r+r+r-r-r-r-r = r#

Therefore,

#r = -29.5#

Hope this helps! :)

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