3 years ago

Solve this 6r+7=13+7r

Mathematics

2 answers:

Arisa [49]3 years ago

6 0

6r + 7 = 13 + 7r
- 6r - 6r
 7 = 13 + r
 - 13 - 13 
 -6 = r

alex41 [277]3 years ago

3 0

Let's move all to one side:

6r+7-13-7r=0

and re-arrange to have similar terms together:
6r-7r +7-13=0

let's add up what we can:

-1r-6=0
we can move the -6 to the other side and multiply both sides by -1 and we get:
r=-6 This is the solution.

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