SOLUTION: -16n+12=39-7n My question is what is the rule for combining the variable. If I +7 I get -11 but if I =16 I then get +11 There must be a rule I don't know...please help!!

Question 983898: -16n+12=39-7n
My question is what is the rule for combining the variable.
If I +7 I get -11 but if I =16 I then get +11
There must be a rule I don't know...please help!!

Answer by Timnewman(323) (Show Source): You can put this solution on YOUR website!
Hi dear!
The rule of bringing these variables states that if the the variable carries positive sign (+),subtract (-) the variable from both side;and if the variable carries nagative sign,add the variable to both side of the equation.
Applying the rule to the solution of your problem,
-16n+12=39-7n
since -7n is nagative,add 7n to both sides
7n-16n+12=39-7n+7n
Your equation becomes
-8n+12=39
also,since 12 is positive,subtract it from bothsides
-8n+12-12=39-12
Which becomes
-8n=27
IS THAT OK?
RELATED QUESTIONS
Hello, i am stuck on my homework, obviously, and i've tried completing this "i'm thinking (answered by ankor@dixie-net.com)

If 7@8=31, 4@6=21, and 5@12=35, what is 3@2? A.7 B.11 C.15 D.16 I don't get this... (answered by Edwin McCravy)

I tried so many times to get the answer but i can't the problem is What percent of 16 is... (answered by whisper)

Find the slope for (-10, -11) and (-16, -20) I know that y2 - y1/x2 - x1 so I have -10... (answered by edjones)

Here is the problem: A soccer team has 16 players. How many ways can the coach choose a... (answered by rothauserc,Edwin McCravy)

Solve |x+4|<7 the answer is -11 (answered by josgarithmetic)
If {{{ sqrt(x^2-5x-11) +3=x }}} then what value is {{{ x^2-3x+3 }}} ? You have to solve... (answered by mananth)
If {{{ sqrt (x^2-5x-11)+3 = x}}} then what value is {{{ x^2-3x+3 }}}? You have to solve (answered by John10)
I must solve the equation using the substitution method. 2x+y=3 y=5x-11 I worked... (answered by stanbon,Alan3354)