Answer:
Explanation:
0.25r-0.125+0.5r=0.5+r
0.25r + 0.5r - 0.125 = 0.5 * r
0.75r - r = 0.125 + 0.5
-0.25r = 0.625
r = 0.625 / -0.25
r = -2.5
9.5m questions
12.2m answers