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Total Back = Food + Lodging + traveling distance
$3390 = 0.65*600 + 60*x ?
for part a?
what about part b?
Looks like you have to explain every step you do to isolate x on one side
these look familiar, i think they want those words http://www.mathwords.com/e/equation_rules.htm
would that be good to submit?
flip equation, make a not of the symmetric property a = b then b = a
So what would i say?
I would not use subtraction or division, they are just a fancy word for addition and multiplication
--'Subtract 390 from both sides' i would put 'ADDITION Property of (-6) to both sides'
no need to put simplified , you just took care of the non alebra numbers
ok, now its good to submit?
---Instead of divide by 60 I would put ; Multiplication property of Equality" multiplied by 1/60
i think so
less you want to state each property after you name it, like IF a = b, then c*a = c*b , where c=(1/60) for the multiplication property step