Question

6r+7=13+7r I don’t know what it is

Answer 1

6r+7=13+7r

Move 7r to the other side. Sign changes from +7r to -7r.

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

6r-7r+7=13

-r+7=13

Move +r to the other side. Sign changes from +7 to -7.

-r+7-7=13-7

-r=6

Multiply by -1 to get positive and for 6

-r(-1)=6(-1)

r=-6

Answer: r=-6

Answer 2

Answer:

$\large\boxed{r=-6}$

Step-by-step explanation:

In this question, we would be solving for r.

What this means is that we need to figure out what r is.

We would be using this equation:

$6r+7=13+7r$

We will get the r variables to one side and solve from there.

Solve:

$6r+7=13+7r\\\\\text{Subtract 7r to both sides}\\\\-r+7=13\\\\\text{Subtract 7 on both sides}\\\\-r=6\\\\\text{Divide by -1, since the variable r can't be a negative}\\\\r=-6$

When you're done solving, you should get -6.

This means that r = -6

I hope this helped you out.

Good luck on your academics.

Have a fantastic day!