Answer:
s = - 8
Step-by-step explanation:
0.8 + s = 9(0.2s + 0.8) ← distribute parenthesis by 9
0.8 + s = 1.8s + 7.2 (subtract s from both sides )
0.8 = 0.8s + 7.2 ( subtract 7.2 from both sides )
- 6.4 = 0.8s ( divide both sides by 0.8 )
- 8 = s
