Question

resolva a equaçao r-2(r-3)=3r

Answer 1

r-2r+6=3r
r-2r-3r = -6
r-5r = -6
-4r = -6 (.-1)
4r = 6
r = 6/4 (simplificando por 2)
r = 3/2

Answer 2

r - 2r + 6 = 3r
r - 2r - 3r = - 6
- 4r = - 6 (-1)
4r = 6
r = 6/4
r = 1,5