Answer:
s = -6.7
Explanation:
- 16.68 + 1.8s + 2.2 = 3s - 6.4
- 16.68 + 2.2 + 1.8s = 3s - 6.4
- 14.48 + 1.8s = 3s - 6.4
Collect like terms
Note: crossing over equals to, the sign will change
Hint: either from
- to +
Or
+ to -
-14.48 + 6.4 = 3s - 1.8s
-8.08 = 3s - 1.8s
-8.08 = 1.2s
Divide both sides by 1.2, to get the value of s
-8.08/1.2 = 1.2s/1.2
-6.7 = s
s = -6.7