Question 940162
{{{17 - s / 4 = -10}}}  |Multiplying thru by 4 so as all denominators = 1
68 - s = -40
108 = s
And...checking
17- 108/4 = 17 - 27 = -10
...
RE TY
{{{(s/cross(4))cross(4) = s}}}