LeftSide Command

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This command works in CAS View only.

LeftSide[ <Equation> ]
Returns the left-hand side of the equation.
Example:
LeftSide[x + 2 = 3x + 1] yields x + 2.
LeftSide[ { <Equation> } ]
Returns the left-hand side of the equation (if you use a list of multiple equations as input, left-hand side of the first one is returned).
Example:
LeftSide[{a^2 + b^2 = c^2, x + 2 = 3x + 1}] yields a2 + b2.
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