SOLUTION: what is r-2+3r=6+5r also 3x+x-2=x+7

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Question 222691: what is r-2+3r=6+5r also 3x+x-2=x+7
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
# 1



r-2%2B3r=6%2B5r Start with the given equation.


4r-2=6%2B5r Combine like terms on the left side.


4r=6%2B5r%2B2 Add 2 to both sides.


4r-5r=6%2B2 Subtract 5r from both sides.


-r=6%2B2 Combine like terms on the left side.


-r=8 Combine like terms on the right side.


r=%288%29%2F%28-1%29 Divide both sides by -1 to isolate r.


r=-8 Reduce.


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Answer:

So the solution is r=-8



# 2



3x%2Bx-2=x%2B7 Start with the given equation.


4x-2=x%2B7 Combine like terms on the left side.


4x=x%2B7%2B2 Add 2 to both sides.


4x-x=7%2B2 Subtract x from both sides.


3x=7%2B2 Combine like terms on the left side.


3x=9 Combine like terms on the right side.


x=%289%29%2F%283%29 Divide both sides by 3 to isolate x.


x=3 Reduce.


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Answer:

So the solution is x=3