Question

7r - 1 = 2r + 9 last one for now thank you guys so much for helping me!

Answer 1

Answer:

$r=2$

Step-by-step explanation:

$7r - 1 = 2r + 9$

Add 1 to both sides:

$7r-1+1=2r+9+1$

$7r=2r+10$

Subtract 2r from both sides:

$7r-2r=2r+10-2r$

$5r=10$

Divide both sides by 5:

$\frac{5r}{5}=\frac{10}{5}$

$r=2$

Answer 2

Answer:

2

Step-by-step explanation: