SOLUTION: How do I solve the riddle of 5/6 +7 with the answer being 42?

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: How do I solve the riddle of 5/6 +7 with the answer being 42?       Log On


   



Question 644018: How do I solve the riddle of 5/6 +7 with the answer being 42?
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

5%2F6+%2B7 with the answer being 42:
%285%2F6%29x+%2B7=42
5x%2F6+=42-7
5x%2F6+=35
5x+=35%2A6
5x+=210
x+=210%2F5
x+=42

check:
%285%2F6%29x+%2B7=42
%285%2F6%2942+%2B7=42
%285%2Fcross%286%29%29cross%2842%297+%2B7=42
5%2A7+%2B7=42
35+%2B7=42
42=42