Question

how can i solve-3r-8=-5r- 12

Answer 1

add the 5r over
2r-8=-12
add the 8 over
2r=-4
divide by 2
r=-2

Answer 2

-3r-8=-5r-12


-3r=-5r-12+8


-3r+5r=-12+8


2r=-12+8


2r=-4


r=-4/2


r=-2