Divide both Sides

What: Divide both sides of == by the same expression.
Why: Such side-wise division is an essential computation for solving equations.   
Time to Complete: 3 hours. 
eq = (x - 3 == 17*y);
lhs = eq.left / 17; 
rhs = eq.right /17;
eq2 = (lhs == rhs);
show eq2;
save as lhsrhs;
Output
   
"eq2" → (-3 + x)/17 == y
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