Homework in China for elementary school students: How tall is the table?
How Tall is the Table? Two Math Equations
Assume Table=X, Turtle=T, and Cat=C.
From Left, we have 
and From Right, we have 
Moving C and T to the left in both equations:
Adding both sides of equations and C and T cancelled out, thus:
and thus X=150.
Two Equations, Three Unknowns, we can’t solve all all variables, but in this case, X can be obtained regardless of T and C.
–EOF (The Ultimate Computing & Technology Blog) —
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