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aboy aboy
  • 21-09-2015
  • Mathematics
Answered

6r+7=13+7r help plz linear equations

Verified Answer :

WorldCitizen WorldCitizen
  • 04-10-2015

Well, let's put all the "r"s on one side, alone:

6r-7r=13-7 //you can put the expressions on the other side of the equation if you change the sign

now we add up:

-r=6

now we multiply both sides by (-1):

r=-6

which is the solution!

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